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mw-first-heading"><span class="mw-page-title-main">Global Boundary Stratotype Section and Point</span></h1> <div class="tagline"></div> </div> <ul id="p-associated-pages" class="minerva__tab-container"> <li class="minerva__tab selected"><a class="minerva__tab-text" href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" rel="" data-event-name="tabs.subject">Article</a></li> <li class="minerva__tab "><a class="minerva__tab-text" href="https://en-m-wikipedia-org.translate.goog/wiki/Talk:Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" rel="discussion" data-event-name="tabs.talk">Talk</a></li> </ul> <nav class="page-actions-menu"> <ul id="p-views" class="page-actions-menu__list"> <li id="language-selector" class="page-actions-menu__list-item"><a role="button" 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minerva-icon--star"></span> <span>Watch</span> </a></li> <li id="page-actions-edit" class="page-actions-menu__list-item"><a role="button" id="ca-edit" href="https://en-m-wikipedia-org.translate.goog/w/index.php?title=Global_Boundary_Stratotype_Section_and_Point&action=edit&_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" data-event-name="menu.edit" data-mw="interface" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet edit-page menu__item--page-actions-edit"> <span class="minerva-icon minerva-icon--edit"></span> <span>Edit</span> </a></li> </ul> </nav> <div id="mw-content-subtitle"></div> </div> <div id="bodyContent" class="content"> <div id="mw-content-text" class="mw-body-content"> <script>function mfTempOpenSection(id){var block=document.getElementById("mf-section-"+id);block.className+=" open-block";block.previousSibling.className+=" open-block";}</script> <div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"> <section class="mf-section-0" id="mf-section-0"> <p>A <b>Global Boundary Stratotype Section and Point</b> (<b>GSSP</b>), sometimes referred to as a <b>golden spike</b>, is an internationally agreed upon reference point on a <a href="https://en-m-wikipedia-org.translate.goog/wiki/Stratigraphic_section?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Stratigraphic section">stratigraphic section</a> which defines the lower boundary of a <a href="https://en-m-wikipedia-org.translate.goog/wiki/Stage_(stratigraphy)?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Stage (stratigraphy)">stage</a> on the <a href="https://en-m-wikipedia-org.translate.goog/wiki/Geologic_time_scale?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Geologic time scale">geologic time scale</a>. The effort to define GSSPs is conducted by the <a href="https://en-m-wikipedia-org.translate.goog/wiki/International_Commission_on_Stratigraphy?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="International Commission on Stratigraphy">International Commission on Stratigraphy</a>, a part of the <a href="https://en-m-wikipedia-org.translate.goog/wiki/International_Union_of_Geological_Sciences?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="International Union of Geological Sciences">International Union of Geological Sciences</a>. Most, but not all, GSSPs are based on <a href="https://en-m-wikipedia-org.translate.goog/wiki/Paleontology?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Paleontology">paleontological</a> changes. Hence GSSPs are usually described in terms of transitions between different <a href="https://en-m-wikipedia-org.translate.goog/wiki/Faunal_stage?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" class="mw-redirect" title="Faunal stage">faunal stages</a>, though far more faunal stages have been described than GSSPs. The GSSP definition effort commenced in 1977. As of 2024, 79 of the 101 stages that need a GSSP have a ratified GSSP.<sup id="cite_ref-International_Chronostratigraphic_Chart_2022_1-0" class="reference"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#cite_note-International_Chronostratigraphic_Chart_2022-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></p> <figure typeof="mw:File/Thumb"> <a href="https://en-m-wikipedia-org.translate.goog/wiki/File:Ediacaran-GSSP-IMGP6652-.jpg?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Ediacaran-GSSP-IMGP6652-.jpg/250px-Ediacaran-GSSP-IMGP6652-.jpg" decoding="async" width="250" height="296" class="mw-file-element" srcset="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Ediacaran-GSSP-IMGP6652-.jpg/375px-Ediacaran-GSSP-IMGP6652-.jpg 1.5x,https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://upload.wikimedia.org/wikipedia/commons/thumb/9/9c/Ediacaran-GSSP-IMGP6652-.jpg/500px-Ediacaran-GSSP-IMGP6652-.jpg 2x" data-file-width="1000" data-file-height="1183"></a> <figcaption> The 'golden spike' (bronze disk in the lower section of the image) or 'type section' of the <b>Global Boundary Stratotype Section and Point</b> (GSSP) for the base of <a href="https://en-m-wikipedia-org.translate.goog/wiki/Ediacaran_period?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" class="mw-redirect" title="Ediacaran period">Ediacaran period</a> (<a href="https://en-m-wikipedia-org.translate.goog/wiki/Ediacara,_South_Australia?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Ediacara, South Australia">Ediacara</a>, <a href="https://en-m-wikipedia-org.translate.goog/wiki/South_Australia?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="South Australia">South Australia</a>) </figcaption> </figure> <figure class="mw-default-size" typeof="mw:File/Thumb"> <a href="https://en-m-wikipedia-org.translate.goog/wiki/File:Ediacaran_GSSP_-_closeup.JPG?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6f/Ediacaran_GSSP_-_closeup.JPG/220px-Ediacaran_GSSP_-_closeup.JPG" decoding="async" width="220" height="165" class="mw-file-element" srcset="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://upload.wikimedia.org/wikipedia/commons/thumb/6/6f/Ediacaran_GSSP_-_closeup.JPG/330px-Ediacaran_GSSP_-_closeup.JPG 1.5x,https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://upload.wikimedia.org/wikipedia/commons/thumb/6/6f/Ediacaran_GSSP_-_closeup.JPG/440px-Ediacaran_GSSP_-_closeup.JPG 2x" data-file-width="1600" data-file-height="1200"></a> <figcaption> The 'golden spike' marking the Ediacaran GSSP </figcaption> </figure> <div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"> <input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none"> <div class="toctitle" lang="en" dir="ltr"> <h2 id="mw-toc-heading">Contents</h2><span class="toctogglespan"><label class="toctogglelabel" for="toctogglecheckbox"></label></span> </div> <ul> <li class="toclevel-1 tocsection-1"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#Rules"><span class="tocnumber">1</span> <span class="toctext">Rules</span></a></li> <li class="toclevel-1 tocsection-2"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#Agreed-upon_Global_Boundary_Stratotype_Section_and_Points"><span class="tocnumber">2</span> <span class="toctext">Agreed-upon Global Boundary Stratotype Section and Points</span></a> <ul> <li class="toclevel-2 tocsection-3"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#Fortune_Head_GSSP"><span class="tocnumber">2.1</span> <span class="toctext">Fortune Head GSSP</span></a></li> </ul></li> <li class="toclevel-1 tocsection-4"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#Global_Standard_Stratigraphic_Ages"><span class="tocnumber">3</span> <span class="toctext">Global Standard Stratigraphic Ages</span></a></li> <li class="toclevel-1 tocsection-5"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#See_also"><span class="tocnumber">4</span> <span class="toctext">See also</span></a></li> <li class="toclevel-1 tocsection-6"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#Notes"><span class="tocnumber">5</span> <span class="toctext">Notes</span></a></li> <li class="toclevel-1 tocsection-7"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#References"><span class="tocnumber">6</span> <span class="toctext">References</span></a></li> <li class="toclevel-1 tocsection-8"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#External_links"><span class="tocnumber">7</span> <span class="toctext">External links</span></a></li> </ul> </div> </section> <div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(1)"> <span class="indicator mf-icon mf-icon-expand mf-icon--small"></span> <h2 id="Rules">Rules</h2><span class="mw-editsection"> <a role="button" href="https://en-m-wikipedia-org.translate.goog/w/index.php?title=Global_Boundary_Stratotype_Section_and_Point&action=edit&section=1&_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Edit section: Rules" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div> <section class="mf-section-1 collapsible-block" id="mf-section-1"> <p>A geologic section has to fulfill a set of criteria to be adapted as a GSSP by the <a href="https://en-m-wikipedia-org.translate.goog/wiki/International_Commission_on_Stratigraphy?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="International Commission on Stratigraphy">ICS</a>. The following list summarizes the criteria:<sup id="cite_ref-Remane_1996_2-0" class="reference"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#cite_note-Remane_1996-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-GSSP_Rules_3-0" class="reference"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#cite_note-GSSP_Rules-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></p> <ul> <li>A GSSP has to define the lower boundary of a geologic <a href="https://en-m-wikipedia-org.translate.goog/wiki/Stage_(stratigraphy)?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Stage (stratigraphy)">stage</a>.</li> <li>The lower boundary has to be defined using a primary marker (usually <a href="https://en-m-wikipedia-org.translate.goog/wiki/First_appearance_datum?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="First appearance datum">first appearance datum</a> of a fossil species). <ul> <li>There should also be secondary markers (other fossils, <a href="https://en-m-wikipedia-org.translate.goog/wiki/Chemostratigraphy?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Chemostratigraphy">chemical</a>, <a href="https://en-m-wikipedia-org.translate.goog/wiki/Geomagnetic_reversal?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Geomagnetic reversal">geomagnetic reversal</a>).</li> <li>The horizon in which the marker appears should have minerals that can be <a href="https://en-m-wikipedia-org.translate.goog/wiki/Radiometric_dating?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Radiometric dating">radiometrically dated</a>.</li> <li>The marker has to have regional and global correlation in outcrops of the same age.</li> <li>The marker should be independent of <a href="https://en-m-wikipedia-org.translate.goog/wiki/Facies?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Facies">facies</a>.</li> </ul></li> <li>The outcrop has to have an adequate thickness.</li> <li>Sedimentation has to be continuous without any changes in facies.</li> <li>The outcrop should be unaffected by tectonic and sedimentary movements, and metamorphism.</li> <li>The outcrop has to be accessible to research and free to access. <ul> <li>This includes that the outcrop has to be located where it can be visited quickly (International airport and good roads), has to be kept in good condition (ideally a national reserve), in accessible terrain, extensive enough to allow repeated sampling and open to researchers of all nationalities.</li> </ul></li> </ul> </section> <div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(2)"> <span class="indicator mf-icon mf-icon-expand mf-icon--small"></span> <h2 id="Agreed-upon_Global_Boundary_Stratotype_Section_and_Points">Agreed-upon Global Boundary Stratotype Section and Points</h2><span class="mw-editsection"> <a role="button" href="https://en-m-wikipedia-org.translate.goog/w/index.php?title=Global_Boundary_Stratotype_Section_and_Point&action=edit&section=2&_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Edit section: Agreed-upon Global Boundary Stratotype Section and Points" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div> <section class="mf-section-2 collapsible-block" id="mf-section-2"> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style> <div role="note" class="hatnote navigation-not-searchable"> Main article: <a href="https://en-m-wikipedia-org.translate.goog/wiki/List_of_Global_Boundary_Stratotype_Sections_and_Points?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="List of Global Boundary Stratotype Sections and Points">List of Global Boundary Stratotype Sections and Points</a> </div> <style data-mw-deduplicate="TemplateStyles:r1238443738">.mw-parser-output .locmap .od{position:absolute}.mw-parser-output .locmap .id{position:absolute;line-height:0}.mw-parser-output .locmap .l0{font-size:0;position:absolute}.mw-parser-output .locmap .pv{line-height:110%;position:absolute;text-align:center}.mw-parser-output .locmap .pl{line-height:110%;position:absolute;top:-0.75em;text-align:right}.mw-parser-output .locmap .pr{line-height:110%;position:absolute;top:-0.75em;text-align:left}.mw-parser-output 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//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:31.146%;left:48.108%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Messinian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:25.785%;left:53.769%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Tortonian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:30.048%;left:53.982%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Serravallian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:25.782%;left:53.767%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Langhian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:25.19%;left:52.455%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Aquitanian_age?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global 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//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:24.492%;left:53.311%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Priabonian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:25.9%;left:49.163%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Lutetian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:35.833%;left:59.036%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Ypresian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:25.945%;left:49.372%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Thanetian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:25.945%;left:49.372%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Selandian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:29.915%;left:52.402%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Danian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" 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//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:25.91%;left:53.495%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Campanian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:26.185%;left:49.39%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Santonian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:21.042%;left:52.869%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Coniacian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:28.732%;left:20.909%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Turonian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:25.338%;left:51.531%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Cenomanian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:25.28%;left:51.475%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Albian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" 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//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:17.966%;left:48.265%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Kimmeridgian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:25.577%;left:51.754%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Bathonian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:27.667%;left:47.527%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Bajocian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:27.127%;left:49.491%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Aalenian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:19.774%;left:49.862%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Pliensbachian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:21.561%;left:49.101%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Sinemurian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:23.62%;left:53.203%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Hettangian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:24.152%;left:53.314%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Carnian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:24.545%;left:52.909%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Ladinian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:32.733%;left:83.252%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Induan?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:32.732%;left:83.252%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Changhsingian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:36.836%;left:80.367%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Wuchiapingian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:32.273%;left:20.892%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Capitanian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" 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//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:32.291%;left:20.868%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Roadian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:20.062%;left:65.699%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Artinskian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:20.042%;left:65.758%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Sakmarian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:22.086%;left:66.081%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Asselian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" 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//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:25.855%;left:50.845%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Famennian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:25.832%;left:50.857%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Frasnian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:32.646%;left:48.791%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Givetian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:22.139%;left:51.798%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Eifelian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" 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Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:22.214%;left:53.992%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Pragian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" 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//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:22.207%;left:53.979%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/P%C5%99%C3%ADdol%C3%AD?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:20.912%;left:49.229%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Ludfordian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:20.912%;left:49.229%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Gorstian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:20.769%;left:49.288%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Homerian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:20.788%;left:49.267%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Sheinwoodian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:28.897%;left:48.353%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Telychian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:22.265%;left:53.948%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Aeronian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:19.2%;left:49.092%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Rhuddanian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:32.787%;left:80.95%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Hirnantian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:30.872%;left:23.313%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Katian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:19.048%;left:53.702%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Sandbian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:33.97%;left:82.914%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Darriwilian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:32.855%;left:80.937%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Dapingian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:17.578%;left:53.473%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Floian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:22.398%;left:33.899%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Tremadocian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:33.991%;left:82.949%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Jiangshanian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:34.228%;left:80.424%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Paibian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:34.044%;left:80.546%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Guzhangian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:28.049%;left:18.613%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Drumian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:35.511%;left:80.115%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Wuliuan?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:23.847%;left:34.491%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Fortunian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:67.406%;left:88.509%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Ediacaran?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/8px-Red_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/12px-Red_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/16px-Red_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> <div class="od notheme" style="top:13.792%;left:17.902%;font-size:91%"> <div class="id" style="left:-4px;top:-4px"> <span class="notpageimage" typeof="mw:File"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Eoarchean?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Boundary Stratotype Section and Point"> <noscript> <img alt="Global Boundary Stratotype Section and Point" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b2/Purple_pog.svg/8px-Purple_pog.svg.png" decoding="async" width="8" height="8" class="mw-file-element" data-file-width="64" data-file-height="64"> </noscript><span class="lazy-image-placeholder" style="width: 8px;height: 8px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b2/Purple_pog.svg/8px-Purple_pog.svg.png" data-alt="Global Boundary Stratotype Section and Point" data-width="8" data-height="8" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b2/Purple_pog.svg/12px-Purple_pog.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b2/Purple_pog.svg/16px-Purple_pog.svg.png 2x" data-class="mw-file-element"> </span></a></span> </div> </div> </div> <div class="thumbcaption"> <div class="magnify"> <a href="https://en-m-wikipedia-org.translate.goog/wiki/File:World_location_map_(equirectangular_180).svg?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="File:World location map (equirectangular 180).svg">class=notpageimage| </a> </div>World map of all ratified GSSPs, SABSs, and GSSAs. GSSPs use red markers, SABSs use green markers, and GSSAs use purple markers.<sup id="cite_ref-GSSP_Table_-_All_Periods_4-0" class="reference"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#cite_note-GSSP_Table_-_All_Periods-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </div> </div> </div> <p>Once a GSSP boundary has been agreed upon, a 'golden spike' is driven into the geologic section to mark the precise boundary for future geologists (though in practice the 'spike' need neither be golden nor an actual spike). As such, GSSPs are also sometimes referred to as <i>golden spikes</i>. The first stratigraphic boundary was defined in 1972 by identifying the <a href="https://en-m-wikipedia-org.translate.goog/wiki/Silurian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Silurian">Silurian</a>-<a href="https://en-m-wikipedia-org.translate.goog/wiki/Devonian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Devonian">Devonian</a> boundary with a bronze plaque at a locality called <a href="https://en-m-wikipedia-org.translate.goog/wiki/Klonk?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Klonk">Klonk</a>, northeast of the village of Suchomasty in the <a href="https://en-m-wikipedia-org.translate.goog/wiki/Czech_Republic?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Czech Republic">Czech Republic</a>.</p> <div class="mw-heading mw-heading3"> <h3 id="Fortune_Head_GSSP">Fortune Head GSSP</h3><span class="mw-editsection"> <a role="button" href="https://en-m-wikipedia-org.translate.goog/w/index.php?title=Global_Boundary_Stratotype_Section_and_Point&action=edit&section=3&_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Edit section: Fortune Head GSSP" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div> <p>The <a href="https://en-m-wikipedia-org.translate.goog/wiki/Precambrian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Precambrian">Precambrian</a>-<a href="https://en-m-wikipedia-org.translate.goog/wiki/Cambrian?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Cambrian">Cambrian</a> boundary GSSP at <a href="https://en-m-wikipedia-org.translate.goog/wiki/Fortune_Head?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Fortune Head">Fortune Head</a>, <a href="https://en-m-wikipedia-org.translate.goog/wiki/Newfoundland_(island)?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Newfoundland (island)">Newfoundland</a> is a typical GSSP. It is accessible by paved road and is set aside as a <a href="https://en-m-wikipedia-org.translate.goog/wiki/Nature_preserve?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" class="mw-redirect" title="Nature preserve">nature preserve</a>. A continuous section is available from beds that are clearly Precambrian into beds that are clearly Cambrian. The boundary is set at the first appearance of a complex trace fossil <i><a href="https://en-m-wikipedia-org.translate.goog/wiki/Treptichnus_pedum?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" class="mw-redirect" title="Treptichnus pedum">Treptichnus pedum</a></i> that is found worldwide. The Fortune Head GSSP is unlikely to be washed away or built over. Nonetheless, <i>Treptichnus pedum</i> is less than ideal as a marker fossil as it is not found in every Cambrian sequence, and it is not assured that it is found at the same level in every exposure. In fact, further eroding its value as a boundary marker, it has since been identified in strata 4m <i>below</i> the GSSP.<sup id="cite_ref-5" class="reference"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> However, no other fossil is known that would be preferable. There is no <a href="https://en-m-wikipedia-org.translate.goog/wiki/Radiometric_dating?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Radiometric dating">radiometrically datable</a> bed at the boundary at Fortune Head, but there is one slightly above the boundary in similar beds nearby. These factors have led some geologists<sup class="noprint Inline-Template" style="white-space:nowrap;">[<i><a href="https://en-m-wikipedia-org.translate.goog/wiki/Wikipedia:Manual_of_Style/Words_to_watch?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#Unsupported_attributions" title="Wikipedia:Manual of Style/Words to watch"><span title="The material near this tag possibly uses too-vague attribution or weasel words. (March 2016)">who?</span></a></i>]</sup> to suggest that this GSSP is in need of reassigning.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="https://en-m-wikipedia-org.translate.goog/wiki/Wikipedia:Citation_needed?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (March 2016)">citation needed</span></a></i>]</sup></p> </section> <div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(3)"> <span class="indicator mf-icon mf-icon-expand mf-icon--small"></span> <h2 id="Global_Standard_Stratigraphic_Ages">Global Standard Stratigraphic Ages</h2><span class="mw-editsection"> <a role="button" href="https://en-m-wikipedia-org.translate.goog/w/index.php?title=Global_Boundary_Stratotype_Section_and_Point&action=edit&section=4&_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Edit section: Global Standard Stratigraphic Ages" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div> <section class="mf-section-3 collapsible-block" id="mf-section-3"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"> <div role="note" class="hatnote navigation-not-searchable"> Main article: <a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Standard_Stratigraphic_Age?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Global Standard Stratigraphic Age">Global Standard Stratigraphic Age</a> </div> <p>Because defining a GSSP depends on finding well-preserved geologic sections and identifying key events, this task becomes more difficult as one goes farther back in time. Before 630 million years ago, boundaries on the geologic timescale are defined simply by reference to fixed dates, known as "Global Standard Stratigraphic Ages" (GSSAs).</p> </section> <div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(4)"> <span class="indicator mf-icon mf-icon-expand mf-icon--small"></span> <h2 id="See_also">See also</h2><span class="mw-editsection"> <a role="button" href="https://en-m-wikipedia-org.translate.goog/w/index.php?title=Global_Boundary_Stratotype_Section_and_Point&action=edit&section=5&_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Edit section: See also" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div> <section class="mf-section-4 collapsible-block" id="mf-section-4"> <table class="wikitable" style="float:right; font-size:100%; width:400px; margin-left:5px;"> <caption> <a href="https://en-m-wikipedia-org.translate.goog/wiki/Geologic_time_scale?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Geologic time scale">Units in geochronology and stratigraphy</a><sup id="cite_ref-6" class="reference"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </caption> <tbody> <tr> <th>Segments of rock (<a href="https://en-m-wikipedia-org.translate.goog/wiki/Stratum?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Stratum">strata</a>) in <a href="https://en-m-wikipedia-org.translate.goog/wiki/Chronostratigraphy?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Chronostratigraphy">chronostratigraphy</a></th> <th>Time spans in <a href="https://en-m-wikipedia-org.translate.goog/wiki/Geochronology?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Geochronology">geochronology</a></th> <th>Notes to<br> geochronological units</th> </tr> <tr> <td style="text-align:center;"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Eonothem?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Eonothem">Eonothem</a></td> <td style="text-align:center;"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Geologic_time_scale?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#Terminology" title="Geologic time scale">Eon</a></td> <td>4 total, half a billion years or more</td> </tr> <tr> <td style="text-align:center;"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Erathem?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Erathem">Erathem</a></td> <td style="text-align:center;"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Geologic_time_scale?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#Terminology" title="Geologic time scale">Era</a></td> <td>10 defined, several hundred million years</td> </tr> <tr> <td style="text-align:center;"><a href="https://en-m-wikipedia-org.translate.goog/wiki/System_(stratigraphy)?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="System (stratigraphy)">System</a></td> <td style="text-align:center;"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Geologic_time_scale?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#Terminology" title="Geologic time scale">Period</a></td> <td>22 defined, tens to ~one hundred million years</td> </tr> <tr> <td style="text-align:center;"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Series_(stratigraphy)?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Series (stratigraphy)">Series</a></td> <td style="text-align:center;"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Geologic_time_scale?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#Terminology" title="Geologic time scale">Epoch</a></td> <td>34 defined, tens of millions of years</td> </tr> <tr> <td style="text-align:center;"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Stage_(stratigraphy)?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Stage (stratigraphy)">Stage</a></td> <td style="text-align:center;"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Geologic_time_scale?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#Terminology" title="Geologic time scale">Age</a></td> <td>99 defined, millions of years</td> </tr> <tr> <td style="text-align:center;"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Chronozone?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Chronozone">Chronozone</a></td> <td style="text-align:center;"><a href="https://en-m-wikipedia-org.translate.goog/wiki/Polarity_chron?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" class="mw-redirect" title="Polarity chron">Chron</a></td> <td>subdivision of an age, not used by the ICS timescale</td> </tr> </tbody> </table> <ul> <li><a href="https://en-m-wikipedia-org.translate.goog/wiki/Body_plan?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Body plan">Body plan</a></li> <li><a href="https://en-m-wikipedia-org.translate.goog/wiki/MN_zonation?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" class="mw-redirect" title="MN zonation">MN zonation</a></li> <li><a href="https://en-m-wikipedia-org.translate.goog/wiki/Fauna?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Fauna">Fauna</a></li> <li><a href="https://en-m-wikipedia-org.translate.goog/wiki/Geologic_time_scale?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Geologic time scale">Geologic time scale</a> <ul> <li><a href="https://en-m-wikipedia-org.translate.goog/wiki/New_Zealand_geologic_time_scale?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="New Zealand geologic time scale">New Zealand geologic time scale</a></li> </ul></li> <li><a href="https://en-m-wikipedia-org.translate.goog/wiki/North_American_land_mammal_age?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="North American land mammal age">North American land mammal age</a></li> <li><a href="https://en-m-wikipedia-org.translate.goog/wiki/Type_locality_(geology)?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Type locality (geology)">Type locality</a></li> </ul> </section> <div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(5)"> <span class="indicator mf-icon mf-icon-expand mf-icon--small"></span> <h2 id="Notes">Notes</h2><span class="mw-editsection"> <a role="button" href="https://en-m-wikipedia-org.translate.goog/w/index.php?title=Global_Boundary_Stratotype_Section_and_Point&action=edit&section=6&_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Edit section: Notes" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div> <section class="mf-section-5 collapsible-block" id="mf-section-5"> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style> <div class="reflist"> <div class="mw-references-wrap"> <ol class="references"> <li id="cite_note-International_Chronostratigraphic_Chart_2022-1"><span class="mw-cite-backlink"><b><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#cite_ref-International_Chronostratigraphic_Chart_2022_1-0">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://stratigraphy.org/chart%23latest-version">"Latest version of international chronostratigraphic chart"</a>. International Commission on Stratigraphy. <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://web.archive.org/web/20140530005940/http://www.stratigraphy.org/index.php/ics-chart-timescale%23latest-version">Archived</a> from the original on 2014-05-30<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-03-17</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Latest+version+of+international+chronostratigraphic+chart&rft.pub=International+Commission+on+Stratigraphy&rft_id=https%3A%2F%2Fstratigraphy.org%2Fchart%23latest-version&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span></span></li> <li id="cite_note-Remane_1996-2"><span class="mw-cite-backlink"><b><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#cite_ref-Remane_1996_2-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRemaneM._G._BassettJ._W._CowieK.H._Gohrbandt1996" class="citation journal cs1">Remane, J.; M. G. Bassett; J. W. Cowie; K.H. Gohrbandt; H.R. Lane; O. Michelsen; Wang Naiwen (1996). <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=http://www.stratigraphy.org/upload/Remane1996.pdf">"Guidelines for the establishment of global chronostratigraphic standards by the International Commission on Stratigraphy (ICS)"</a> <span class="cs1-format">(PDF)</span>. <i>Episodes</i>. <b>19</b>: 77–81. <a href="https://en-m-wikipedia-org.translate.goog/wiki/Doi_(identifier)?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://doi.org/10.18814%252Fepiiugs%252F1996%252Fv19i3%252F007">10.18814/epiiugs/1996/v19i3/007</a></span>. <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://web.archive.org/web/20150318003208/http://stratigraphy.org/upload/Remane1996.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on 2015-03-18.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Episodes&rft.atitle=Guidelines+for+the+establishment+of+global+chronostratigraphic+standards+by+the+International+Commission+on+Stratigraphy+%28ICS%29&rft.volume=19&rft.pages=77-81&rft.date=1996&rft_id=info%3Adoi%2F10.18814%2Fepiiugs%2F1996%2Fv19i3%2F007&rft.aulast=Remane&rft.aufirst=J.&rft.au=M.+G.+Bassett&rft.au=J.+W.+Cowie&rft.au=K.H.+Gohrbandt&rft.au=H.R.+Lane&rft.au=O.+Michelsen&rft.au=Wang+Naiwen&rft_id=http%3A%2F%2Fwww.stratigraphy.org%2Fupload%2FRemane1996.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span></span></li> <li id="cite_note-GSSP_Rules-3"><span class="mw-cite-backlink"><b><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#cite_ref-GSSP_Rules_3-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://engineering.purdue.edu/Stratigraphy/gssp/gssp_r.html">"GSSP Rules"</a>. Geologic Timescale Foundation. <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://web.archive.org/web/20230124092037/https://timescalefoundation.org/gssp/gssp_r.html">Archived</a> from the original on 2023-01-24<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-03-17</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=GSSP+Rules&rft.pub=Geologic+Timescale+Foundation&rft_id=https%3A%2F%2Fengineering.purdue.edu%2FStratigraphy%2Fgssp%2Fgssp_r.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span></span></li> <li id="cite_note-GSSP_Table_-_All_Periods-4"><span class="mw-cite-backlink"><b><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#cite_ref-GSSP_Table_-_All_Periods_4-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=http://stratigraphy.science.purdue.edu/gssp/index.php?parentid%3Dall">"GSSP table with pages on each ratified GSSP"</a>. <i>ICS Subcommission for Stratigraphic Information</i>. <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://web.archive.org/web/20170102093321/https://engineering.purdue.edu/Stratigraphy/gssp/index.php?parentid%3Dall">Archived</a> from the original on 2017-01-02<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-03-17</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=ICS+Subcommission+for+Stratigraphic+Information&rft.atitle=GSSP+table+with+pages+on+each+ratified+GSSP&rft_id=http%3A%2F%2Fstratigraphy.science.purdue.edu%2Fgssp%2Findex.php%3Fparentid%3Dall&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span></span></li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#cite_ref-5">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGehlingJensenDroserMyrow2001" class="citation journal cs1">Gehling, J.; Jensen, S. R.; Droser, M.; Myrow, P.; Narbonne, G. (March 2001). <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://sites.coloradocollege.edu/pmyrow/files/2012/09/BurrowingBelowTheBasalCambrian.pdf">"Burrowing below the basal Cambrian GSSP, Fortune Head, Newfoundland"</a> <span class="cs1-format">(PDF)</span>. <i>Geological Magazine</i>. <b>138</b> (2): 213–218. <a href="https://en-m-wikipedia-org.translate.goog/wiki/Bibcode_(identifier)?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://ui.adsabs.harvard.edu/abs/2001GeoM..138..213G">2001GeoM..138..213G</a>. <a href="https://en-m-wikipedia-org.translate.goog/wiki/Doi_(identifier)?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://doi.org/10.1017%252FS001675680100509X">10.1017/S001675680100509X</a>. <a href="https://en-m-wikipedia-org.translate.goog/wiki/S2CID_(identifier)?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://api.semanticscholar.org/CorpusID:131211543">131211543</a>. <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://web.archive.org/web/20170811193214/https://sites.coloradocollege.edu/pmyrow/files/2012/09/BurrowingBelowTheBasalCambrian.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on 2017-08-11.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Geological+Magazine&rft.atitle=Burrowing+below+the+basal+Cambrian+GSSP%2C+Fortune+Head%2C+Newfoundland&rft.volume=138&rft.issue=2&rft.pages=213-218&rft.date=2001-03&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A131211543%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1017%2FS001675680100509X&rft_id=info%3Abibcode%2F2001GeoM..138..213G&rft.aulast=Gehling&rft.aufirst=J.&rft.au=Jensen%2C+S.+R.&rft.au=Droser%2C+M.&rft.au=Myrow%2C+P.&rft.au=Narbonne%2C+G.&rft_id=https%3A%2F%2Fsites.coloradocollege.edu%2Fpmyrow%2Ffiles%2F2012%2F09%2FBurrowingBelowTheBasalCambrian.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span></span></li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="https://en-m-wikipedia-org.translate.goog/wiki/Global_Boundary_Stratotype_Section_and_Point?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#cite_ref-6">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCohenFinneyGibbard2015" class="citation cs2">Cohen, K.M.; Finney, S.; Gibbard, P.L. (2015), <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=http://www.stratigraphy.org/ICSchart/ChronostratChart2015-01.pdf"><i>International Chronostratigraphic Chart</i></a> <span class="cs1-format">(PDF)</span>, International Commission on Stratigraphy</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=International+Chronostratigraphic+Chart&rft.pub=International+Commission+on+Stratigraphy&rft.date=2015&rft.aulast=Cohen&rft.aufirst=K.M.&rft.au=Finney%2C+S.&rft.au=Gibbard%2C+P.L.&rft_id=http%3A%2F%2Fwww.stratigraphy.org%2FICSchart%2FChronostratChart2015-01.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span>.</span></li> </ol> </div> </div> </section> <div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(6)"> <span class="indicator mf-icon mf-icon-expand mf-icon--small"></span> <h2 id="References">References</h2><span class="mw-editsection"> <a role="button" href="https://en-m-wikipedia-org.translate.goog/w/index.php?title=Global_Boundary_Stratotype_Section_and_Point&action=edit&section=7&_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Edit section: References" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div> <section class="mf-section-6 collapsible-block" id="mf-section-6"> <ul> <li>Hedberg, H.D., (editor), <i>International stratigraphic guide: A guide to stratigraphic classification, terminology, and procedure</i>, New York, John Wiley and Sons, 1976<sup class="noprint Inline-Template" style="white-space:nowrap;">[<i><a href="https://en-m-wikipedia-org.translate.goog/wiki/Wikipedia:Citing_sources?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Wikipedia:Citing sources"><span title="Please supply an ISBN for this book.">ISBN missing</span></a></i>]</sup></li> <li> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=http://stratigraphy.science.purdue.edu/charts/chart.html">"International Stratigraphic Chart"</a>. <i><a href="https://en-m-wikipedia-org.translate.goog/wiki/International_Commission_on_Stratigraphy?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="International Commission on Stratigraphy">International Commission on Stratigraphy</a></i>. <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://web.archive.org/web/20190403231347/https://engineering.purdue.edu/Stratigraphy/charts/chart.html">Archived</a> from the original on 2019-04-03.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=International+Commission+on+Stratigraphy&rft.atitle=International+Stratigraphic+Chart&rft_id=http%3A%2F%2Fstratigraphy.science.purdue.edu%2Fcharts%2Fchart.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span></li> <li> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=http://stratigraphy.science.purdue.edu/gssp/index.php?parentid%3Dall">"GSSP table with pages on each ratified GSSP"</a>. <i>ICS Subcommission for Stratigraphic Information</i>. <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://web.archive.org/web/20170102093321/https://engineering.purdue.edu/Stratigraphy/gssp/index.php?parentid%3Dall">Archived</a> from the original on 2017-01-02.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=ICS+Subcommission+for+Stratigraphic+Information&rft.atitle=GSSP+table+with+pages+on+each+ratified+GSSP&rft_id=http%3A%2F%2Fstratigraphy.science.purdue.edu%2Fgssp%2Findex.php%3Fparentid%3Dall&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span></li> <li> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://web.archive.org/web/20080923230940/http://www.nature.nps.gov/geology/USGSNPS/gtime/gtime1.html">"What is Geologic Time?"</a>. <i>USA National Park Service</i>. 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Archived from <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=http://astro.wsu.edu/worthey/earth/html/md08.html">the original</a> on 2011-07-26.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Washington+State+University&rft.atitle=Earth+Science%3A+Geologic+Age&rft_id=http%3A%2F%2Fastro.wsu.edu%2Fworthey%2Fearth%2Fhtml%2Fmd08.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span></li> <li> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=http://www.ucmp.berkeley.edu/help/timeform.html">"Web Geological Time Machine"</a>. <i>ucmp.berkeley.edu</i>. <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://web.archive.org/web/20210427033600/https://ucmp.berkeley.edu/help/timeform.html">Archived</a> from the original on 2021-04-27.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=ucmp.berkeley.edu&rft.atitle=Web+Geological+Time+Machine&rft_id=http%3A%2F%2Fwww.ucmp.berkeley.edu%2Fhelp%2Ftimeform.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span></li> <li> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://web.archive.org/web/20100618055137/http://pballew.net/arithm16.html%23aeon">"Aeon or Eon"</a>. <i>pballew.net</i>. Archived from <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=http://pballew.net/arithm16.html%23aeon">the original</a> on 2010-06-18.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=pballew.net&rft.atitle=Aeon+or+Eon&rft_id=http%3A%2F%2Fpballew.net%2Farithm16.html%23aeon&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span>, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://web.archive.org/web/20100724212222/http://www.pballew.net/etyindex.html">"Math Words – An alphabetical index"</a>. <i>pballew.net</i>. Archived from <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=http://www.pballew.net/etyindex.html">the original</a> on 2010-07-24.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=pballew.net&rft.atitle=Math+Words+%E2%80%93+An+alphabetical+index&rft_id=http%3A%2F%2Fwww.pballew.net%2Fetyindex.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span></li> </ul> </section> <div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(7)"> <span class="indicator mf-icon mf-icon-expand mf-icon--small"></span> <h2 id="External_links">External links</h2><span class="mw-editsection"> <a role="button" href="https://en-m-wikipedia-org.translate.goog/w/index.php?title=Global_Boundary_Stratotype_Section_and_Point&action=edit&section=8&_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Edit section: External links" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div> <section class="mf-section-7 collapsible-block" id="mf-section-7"> <ul> <li> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://web.archive.org/web/20090113224346/http://www.stratigraphy.org/over.htm">"The Global Boundary Stratotype Section and Point (GSSP): overview"</a>. <i>stratigraphy.org</i>. Archived from <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=http://www.stratigraphy.org/over.htm">the original</a> on 2009-01-13.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=stratigraphy.org&rft.atitle=The+Global+Boundary+Stratotype+Section+and+Point+%28GSSP%29%3A+overview&rft_id=http%3A%2F%2Fwww.stratigraphy.org%2Fover.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span></li> <li> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=http://stratigraphy.science.purdue.edu/charts/chart.html">"Chart of The Global Boundary Stratotype Sections and Points (GSSP): chart"</a>. <i>stratigraphy.science.purdue.edu</i>. <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://web.archive.org/web/20220630221343/https://timescalefoundation.org/charts/chart.html">Archived</a> from the original on 2022-06-30.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=stratigraphy.science.purdue.edu&rft.atitle=Chart+of+The+Global+Boundary+Stratotype+Sections+and+Points+%28GSSP%29%3A+chart&rft_id=http%3A%2F%2Fstratigraphy.science.purdue.edu%2Fcharts%2Fchart.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span></li> <li> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://timescalefoundation.org/gssp/index.php?parentid%3Dall">"GSSP Table - All Periods"</a>. <i>timescalefoundation.org</i>. <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://web.archive.org/web/20231130011455/https://timescalefoundation.org/gssp/index.php?parentid%3Dall">Archived</a> from the original on 2023-11-30.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=timescalefoundation.org&rft.atitle=GSSP+Table+-+All+Periods&rft_id=https%3A%2F%2Ftimescalefoundation.org%2Fgssp%2Findex.php%3Fparentid%3Dall&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span></li> <li> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://ghkclass.net/">"GSSPs and Continental drift 3D views"</a>. <i>ghkclass.net</i>. <a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://web.archive.org/web/20231208201201/https://ghkclass.com/">Archived</a> from the original on 2023-12-08.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=ghkclass.net&rft.atitle=GSSPs+and+Continental+drift+3D+views&rft_id=https%3A%2F%2Fghkclass.net%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlobal+Boundary+Stratotype+Section+and+Point" class="Z3988"></span></li> <li> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=http://www.rocksandminerals.com/geotime/geotime.htm">"Geotime chart displaying geologic time periods compared to the fossil record – Deals with chronology and classifications for laymen (not GSSPs)"</a>. <i>rocksandminerals.com</i>. <a 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title="Sección estratotipo y punto de límite global – Spanish" lang="es" hreflang="es" data-title="Sección estratotipo y punto de límite global" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li> <li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://fa.wikipedia.org/wiki/%25D9%2586%25D9%2582%25D8%25B7%25D9%2587_%25D9%2588_%25D8%25A8%25D8%25B1%25D8%25B4_%25DA%2586%25DB%258C%25D9%2586%25D9%2587%25E2%2580%258C%25DA%25AF%25D9%2588%25D9%2586_%25D9%2585%25D8%25B1%25D8%25B2%25DB%258C_%25D8%25AC%25D9%2587%25D8%25A7%25D9%2586%25DB%258C" title="نقطه و برش چینه‌گون مرزی جهانی – Persian" lang="fa" hreflang="fa" data-title="نقطه و برش چینه‌گون مرزی جهانی" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li> <li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://fr.wikipedia.org/wiki/Point_stratotypique_mondial" title="Point stratotypique mondial – French" lang="fr" hreflang="fr" data-title="Point stratotypique mondial" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li> <li class="interlanguage-link interwiki-id mw-list-item"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://id.wikipedia.org/wiki/GSSP" title="GSSP – Indonesian" lang="id" hreflang="id" data-title="GSSP" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li> <li class="interlanguage-link interwiki-it mw-list-item"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://it.wikipedia.org/wiki/GSSP" title="GSSP – Italian" lang="it" hreflang="it" data-title="GSSP" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li> <li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://nl.wikipedia.org/wiki/Golden_spike" title="Golden spike – Dutch" lang="nl" hreflang="nl" data-title="Golden spike" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li> <li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://ja.wikipedia.org/wiki/%25E5%259B%25BD%25E9%259A%259B%25E6%25A8%2599%25E6%25BA%2596%25E6%25A8%25A1%25E5%25BC%258F%25E5%25B1%25A4%25E6%2596%25AD%25E9%259D%25A2%25E5%258F%258A%25E3%2581%25B3%25E5%259C%25B0%25E7%2582%25B9" title="国際標準模式層断面及び地点 – Japanese" lang="ja" hreflang="ja" data-title="国際標準模式層断面及び地点" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li> <li class="interlanguage-link interwiki-no mw-list-item"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://no.wikipedia.org/wiki/Global_Boundary_Stratotype_Section_and_Point" title="Global Boundary Stratotype Section and Point – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Global Boundary Stratotype Section and Point" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li> <li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://nn.wikipedia.org/wiki/Global_Boundary_Stratotype_Section_and_Point" title="Global Boundary Stratotype Section and Point – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Global Boundary Stratotype Section and Point" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li> <li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://ru.wikipedia.org/wiki/%25D0%2593%25D0%25BB%25D0%25BE%25D0%25B1%25D0%25B0%25D0%25BB%25D1%258C%25D0%25BD%25D1%258B%25D0%25B9_%25D1%2581%25D1%2582%25D1%2580%25D0%25B0%25D1%2582%25D0%25BE%25D1%2582%25D0%25B8%25D0%25BF" title="Глобальный стратотип – Russian" lang="ru" hreflang="ru" data-title="Глобальный стратотип" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li> <li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://simple.wikipedia.org/wiki/GSSP" title="GSSP – Simple English" lang="en-simple" hreflang="en-simple" data-title="GSSP" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li> <li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://sv.wikipedia.org/wiki/Global_boundary_stratotype_section_and_point" title="Global boundary stratotype section and point – Swedish" lang="sv" hreflang="sv" data-title="Global boundary stratotype section and point" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li> <li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://tr.wikipedia.org/wiki/K%25C3%25BCresel_S%25C4%25B1n%25C4%25B1r_Stratotip_Kesiti_ve_Noktas%25C4%25B1" title="Küresel Sınır Stratotip Kesiti ve Noktası – Turkish" lang="tr" hreflang="tr" data-title="Küresel Sınır Stratotip Kesiti ve Noktası" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li> <li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://vi.wikipedia.org/wiki/Ph%25E1%25BA%25ABu_di%25E1%25BB%2587n_v%25C3%25A0_%25C4%2591i%25E1%25BB%2583m_ki%25E1%25BB%2583u_%25C4%2591%25E1%25BB%258Ba_t%25E1%25BA%25A7ng_ranh_gi%25E1%25BB%259Bi_to%25C3%25A0n_c%25E1%25BA%25A7u" title="Phẫu diện và điểm kiểu địa tầng ranh giới toàn cầu – Vietnamese" lang="vi" hreflang="vi" data-title="Phẫu diện và điểm kiểu địa tầng ranh giới toàn cầu" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li> <li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://zh.wikipedia.org/wiki/%25E5%2585%25A8%25E7%2590%2583%25E7%2595%258C%25E7%25BA%25BF%25E5%25B1%2582%25E5%259E%258B%25E5%2589%2596%25E9%259D%25A2%25E5%2592%258C%25E7%2582%25B9%25E4%25BD%258D" title="全球界线层型剖面和点位 – Chinese" lang="zh" hreflang="zh" data-title="全球界线层型剖面和点位" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> </section> </div> <div class="minerva-footer-logo"> <img src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" alt="Wikipedia" width="120" height="18" style="width: 7.5em; height: 1.125em;"> </div> <ul id="footer-info" class="footer-info hlist hlist-separated"> <li id="footer-info-lastmod">This page was last edited on 3 August 2024, at 14:46<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Content is available under <a class="external" rel="nofollow" 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