Nimbia occlusa

<html> <head><script type="text/javascript" src="https://web-static.archive.org/_static/js/bundle-playback.js?v=7YQSqjSh" charset="utf-8"></script> <script type="text/javascript" src="https://web-static.archive.org/_static/js/wombat.js?v=txqj7nKC" charset="utf-8"></script> <script>window.RufflePlayer=window.RufflePlayer||{};window.RufflePlayer.config={"autoplay":"on","unmuteOverlay":"hidden"};</script> <script type="text/javascript" src="https://web-static.archive.org/_static/js/ruffle/ruffle.js"></script> <script type="text/javascript"> __wm.init("https://web.archive.org/web"); __wm.wombat("http://www.peripatus.gen.nz:80/Taxa/Cnidaria/Nimbiaocclusa.html","20101013205138","https://web.archive.org/","web","https://web-static.archive.org/_static/", "1287003098"); </script> <link rel="stylesheet" type="text/css" href="https://web-static.archive.org/_static/css/banner-styles.css?v=p7PEIJWi" /> <link rel="stylesheet" type="text/css" href="https://web-static.archive.org/_static/css/iconochive.css?v=3PDvdIFv" />  <title>Nimbia occlusa</title> <link rel="stylesheet" type="text/css" href="/web/20101013205138cs_/http://www.peripatus.gen.nz/Styles.css"> <meta name="keywords" content="Metazoa, Ediacaran, Nimbia occlusa, Vendian, fossil"> <meta name="description" content="This page presents a brief overview of the Nimbia occlusa, from their origins to the present."> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%" bgcolor="#99B2CC"> <tr> <td width="80%"> <a href="https://web.archive.org/web/20101013205138/http://www.peripatus.gen.nz/Index.html">Peripatus Home Page</a>  <img src="/web/20101013205138im_/http://www.peripatus.gen.nz/Icons/pix1Black.gif" width="5" height="20" alt="pix1Black.gif (807 bytes)" align="absmiddle">  <a href="https://web.archive.org/web/20101013205138/http://www.peripatus.gen.nz/Taxa/Index.html">Taxa</a> >> Nimbia occlusa</td> <td class="UpdateTag" width="20%">Updated: 21 Oct 2003 </td> </tr> </table> <h1>Nimbia occlusa</h1> <hr> <table border="0" cellpadding="10" cellspacing="0" width="100%"> <tr> <td width="50%" valign="top"><h2 class="Abstract">Abstract</h2> <p>xxx</p> <p><i><strong>Keywords:</strong></i> yyy</p> <h2>Introduction</h2> <p><i>Nimbia occlusa</i> is a form-taxon comprising flat, discoidal, circular to oval organisms preserved in positive hyporelief. The peripheral part forms a single thick marginal rim. The central portion within the rim is usually smooth and featureless but may have a central tubercle (translated and abridged from Fedonkin 1985 by Hagadorn & Waggoner 2000).</p> <p>Their consistent morphology and size suggests that they are body fossils. However, identification of these and similar circular "medusoid" fossils is problematic owing to the abundance of circular dubiofossils during this interval (Cloud 1960; Cloud 1968; Hagadorn & Waggoner 2000).</p> <p>Although it is usually interpreted as a cnidarian, <i>Nimbia occlusa</i> seems unlikely to be a single taxon. If it were, its stratigraphic range of ~100 Ma would be extraordinary.</td> <td width="50%" valign="top"><table border="0" cellpadding="8" width="100%"> <tr> <td class="right" width="100%"><table border="0" cellpadding="0" cellspacing="0" bgcolor="#99B2CC"> <tr> <td height="10" valign="top" align="left"><img src="/web/20101013205138im_/http://www.peripatus.gen.nz/Icons/CornerTL.gif" width="10" height="10"></td> <td>  </td> <td height="10" valign="top" align="right"><img src="/web/20101013205138im_/http://www.peripatus.gen.nz/Icons/CornerTR.gif" width="10" height="10"></td> </tr> <tr> <td>  </td> <td><h3>Related Topics</h3> <hr> <p>Further Reading<ul> <li> </li> </ul> <p>Related Pages<ul> <li> </li> </ul> <p>Other Web Sites<ul> <li> </li> </ul> </td> <td valign="top" align="right">  </td> </tr> <tr> <td height="10" valign="bottom" align="left"><img src="/web/20101013205138im_/http://www.peripatus.gen.nz/Icons/CornerBL.gif" width="10" height="10"></td> <td>  </td> <td height="10" valign="bottom" align="right"><img src="/web/20101013205138im_/http://www.peripatus.gen.nz/Icons/CornerBR.gif" width="10" height="10"></td> </tr> </table> </td> </tr> </table> </td> </tr> <tr> <td width="50%"><h2>Morphology</h2> <h2>Phylogeny and Evolution</h2> <h3>Affinities</h3> <h3>Fossil Record</h3> <h3>Origins</h3> <h3>Evolution</h3> <h3>Extinction</h3> <h2>Systematics</h2> <h2 class="Systematic"><strong>Phylum Cnidaria</strong> Hatschek 1888</h2> <h2 class="Systematic"><strong>Class unknown</strong></h2> <h2 class="Systematic"><strong>Order unknown</strong></h2> <h2 class="Systematic"><strong>Family unknown</strong></h2> <h3 class="Systematic"><strong>Genus <em>Nimbia</em></strong> Fedonkin 1980 (verify)</h3> <h3 align="center" class="Systematic"><strong><i>Nimbia occlusa</i></strong> Fedonkin 1980</h3> <table border="0" cellpadding="2" width="100%"> <tr> <td class="left" valign="top" width="20"></td> <td class="left" valign="top"></td> <td class="left" valign="top"></td> <td class="left" valign="top" width="20"></td> </tr> <tr> <td class="left" valign="top" width="20"></td> <td class="left" valign="top"></td> <td class="left" valign="top"></td> <td class="left" valign="top" width="20"></td> </tr> <tr> <td class="left" valign="top" width="20"></td> <td class="left" valign="top"></td> <td class="left" valign="top"></td> <td class="left" valign="top" width="20"></td> </tr> <tr> <td class="left" valign="top" width="20"></td> <td class="left" valign="top"></td> <td class="left" valign="top"></td> <td class="left" valign="top" width="20"></td> </tr> <tr> <td class="left" valign="top" width="20"></td> <td class="left" valign="top"></td> <td class="left" valign="top"></td> <td class="left" valign="top" width="20"></td> </tr> </table> <p><i><b>Original Diagnosis:</b></i> xxx</td> <td width="50%"></td> </tr> <tr> <td width="50%"><i><b>Description:</b></i> Comprising flat, discoidal, circular to oval organisms preserved in positive hyporelief. The peripheral part forms a single thick marginal rim. The central portion within the rim is usually smooth and featureless but may have a central tubercle (translated and abridged from Fedonkin 1985 by Hagadorn & Waggoner 2000).<p>Larger specimens can be up to 60 mm in diameter, with 10 mm thick rim and slightly raised edges. The centre of the discs is typically either slightly sunken or slightly raised. They are also found preserved in negative epirelief, when the relief is reversed from Fedonkins description; in particular, the rim is sunken. The apparent distortion visible in some specimens (fig. 7B, uppermost specimen) suggests that they represent flexible objects.</p> <p><i><b>Occurrence:</b></i> xxx</p> <p><i><b>Discussion:</b></i> xxx</p> <p> </td> <td width="50%"></td> </tr> <tr> <td width="50%"><h2>Conclusion</h2> <p>xxx</p> <h2>Further Information</h2> <p>xxx</td> <td width="50%"></td> </tr> <tr> <td width="50%"><h2>References</h2> <p>Cloud 1960</p> <p>Cloud 1968</p> <p>Fedonkin 1985</p> <p>Hagadorn & Waggoner 2000</td> <td width="50%"></td> </tr> </table> <hr> <table border="0" cellpadding="0" cellspacing="0" width="100%" bgcolor="#99B2CC"> <tr> <td> <a href="https://web.archive.org/web/20101013205138/http://www.peripatus.gen.nz/Index.html">Peripatus Home Page</a>  <img src="/web/20101013205138im_/http://www.peripatus.gen.nz/Icons/pix1Black.gif" width="5" height="20" alt="pix1Black.gif (807 bytes)" align="absmiddle">  <a href="https://web.archive.org/web/20101013205138/http://www.peripatus.gen.nz/Taxa/Index.html">Taxa</a> >> Nimbia occlusa</td> <td class="ContactTag"><a href="https://web.archive.org/web/20101013205138/mailto:chris@peripatus.gen.nz">Contact me.</a> </td> </tr> </table> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td class="Right"><br>  <script type="text/javascript" language="JavaScript">var site="sm9chrisclowes"</script> <script type="text/javascript" language="JavaScript1.2" src="https://web.archive.org/web/20101013205138js_/http://sm9.sitemeter.com/js/counter.js?site=sm9chrisclowes"></script> <noscript> <a href="https://web.archive.org/web/20101013205138/http://sm9.sitemeter.com/stats.asp?site=sm9chrisclowes" target="_top"> <img src="https://web.archive.org/web/20101013205138im_/http://sm9.sitemeter.com/meter.asp?site=sm9chrisclowes" alt="Site Meter" border="0"></a> </noscript>   </td> </tr> </table> </body> </html>

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Nimbia occlusa