Create your own world history timeline

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id="common_events"> <h4 class="timeline-title"> <span id="search_title">All Events</span> <a href="javascript:void(0)" id="all_collapse_btn"><i class="fa fa-chevron-left pull-right" style="font-size: 23px;"></i></a> </h4> <div class="historyworld-events-container"> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading0" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse0" aria-expanded="false" href="#collapse0"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">13.7 billion years ago <br> The Big Bang</a> <span class="alignb"> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> <a href="javascript:void(0)"><i class="icofont-link" style="font-size: 18px;"></i></a> </span> </div> </div> </h5> <div id="collapse0" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading0"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">An unimaginably large explosion from an unimaginably small particle - according to modern theory the first moment of the universe</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Universe" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Universe </a><br> <a href="https://en.wikipedia.org/wiki/Big_Bang" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Big Bang </a><br> <a href="https://en.wikipedia.org/wiki/Chronology_of_the_universe" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Chronology of the universe </a><br> <a href="https://www.esa.int/Science_Exploration/Space_Science/Rosetta" target="_blank" class="event-link"> <i class="fa fa-link" style="font-size: 18px;"></i>  https://www.esa.int/Science_Exploration/Space_Science/Rosetta </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading1" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse1" aria-expanded="false" href="#collapse1"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">13.7 billion years ago <br> Nuclei after three minutes</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse1" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading1"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">Hydrogen and helium nuclei form in the first three minutes, with perhaps another 300,000 years before they combine with electrons to form atoms</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Big_Bang" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Big Bang </a><br> <a href="https://en.wikipedia.org/wiki/Big_Bang_nucleosynthesis" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Big Bang nucleosynthesis </a><br> <a href="/history/beforeTheEarthWasFormed/471?heading=fromElementsToGalaxies" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Before the earth was formed </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading2" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse2" aria-expanded="false" href="#collapse2"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">13 billion years ago <br> Atoms after 300,000 years</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse2" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading2"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">As gravity exerts its pressure within parts of the expanding fireball, subnuclear particles merge into more complex elements</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Atom" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Atom </a><br> <a href="/history/beforeTheEarthWasFormed/471?heading=fromElementsToGalaxies" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Before the earth was formed </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading3" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse3" aria-expanded="false" href="#collapse3"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">12 billion years ago <br> First galaxies begin to form</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse3" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading3"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">The first galaxies begin to form, as self-contained gravitational systems with gases gradually coalescing into stars</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Galaxy_formation_and_evolution" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Galaxy formation and evolution </a><br> <a href="https://en.wikipedia.org/wiki/Galaxy" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Galaxy </a><br> <a href="https://en.wikipedia.org/wiki/Cosmic_Calendar" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Cosmic Calendar </a><br> <a href="/history/beforeTheEarthWasFormed/471?heading=fromElementsToGalaxies" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Before the earth was formed </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading4" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse4" aria-expanded="false" href="#collapse4"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">4.6 billion years ago <br> Milky Way and the sun</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse4" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading4"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">A new galaxy, the Milky Way, forms - and one of its stars is our sun</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Milky_Way" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Milky Way </a><br> <a href="https://en.wikipedia.org/wiki/Sun" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Sun </a><br> <a href="https://en.wikipedia.org/wiki/Satellite_galaxies_of_the_Milky_Way" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Satellite galaxies of the Milky Way </a><br> <a href="/history/beforeTheEarthWasFormed/471?heading=ourSolarSystem" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Before the earth was formed </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading5" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse5" aria-expanded="false" href="#collapse5"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">4.6 billion years ago <br> Nuclear dust becomes solar system</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse5" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading5"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">The new star settles down, while nuclear dust in the vicinity coalesces into planets and asteroids orbiting the sun</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Nebular_hypothesis#Formation_of_planets" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Nebular hypothesis </a><br> <a href="https://en.wikipedia.org/wiki/Formation_and_evolution_of_the_Solar_System" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Formation and evolution of the Solar System </a><br> <a href="/history/beforeTheEarthWasFormed/471?heading=ourSolarSystem" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Before the earth was formed </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading6" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse6" aria-expanded="false" href="#collapse6"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">4.5 billion years ago <br> Earth condenses as hot solid sphere</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse6" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading6"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">The earth condenses into a solid sphere, with an inner core which is extremely dense and hot</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/History_of_Earth#Hadean_and_Archean_Eons" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  History of Earth </a><br> <a href="https://en.wikipedia.org/wiki/Earth" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Earth </a><br> <a href="https://en.wikipedia.org/wiki/Earth_science" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Earth science </a><br> <a href="/history/theEarthAndTheHeavens/214?heading=theEarthTakesShape" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  The earth and the heavens </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading7" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse7" aria-expanded="false" href="#collapse7"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">4 billion years ago <br> Earth's rock-and-water surface</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse7" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading7"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">The earth's surface settles into a heaving turmoil of rock and water</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Early_Earth" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Early Earth </a><br> <a href="https://en.wikipedia.org/wiki/Earth" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Earth </a><br> <a href="https://en.wikipedia.org/wiki/Earth_science" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Earth science </a><br> <a href="/history/theEarthAndTheHeavens/214?heading=theEarthTakesShape" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  The earth and the heavens </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading8" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse8" aria-expanded="false" href="#collapse8"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">3.5 billion years ago <br> First life on earth - bacteria</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse8" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading8"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">Fossilized bacteria have been found in rock 3.5 billion years old in Africa</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Bacteria" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Bacteria </a><br> <a href="https://en.wikipedia.org/wiki/Pathogenic_bacteria" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Pathogenic bacteria </a><br> <a href="/history/evolution/589?heading=tentativeBeginnings" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Evolution </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading9" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse9" aria-expanded="false" href="#collapse9"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">3 billion years ago <br> Algae in the water</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse9" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading9"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">Single-celled water creatures, such as algae, begin the 2-billion-year process of evolving into slightly more complex forms of life</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Algae" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Algae </a><br> <a href="https://en.wikipedia.org/wiki/Green_algae" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Green algae </a><br> <a href="/history/evolutionaryBiologyCellBiology/589?heading=fromAlgaeToFishes" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Evolutionary biology; cell biology </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading10" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse10" aria-expanded="false" href="#collapse10"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">1 billion years ago <br> Sponges and jellyfish in sea</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse10" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading10"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">Sponges and jellyfish drift in the sea, to be joined later by more purposeful shrimps and lobsters</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Jellyfish" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Jellyfish </a><br> <a href="/history/evolution/589?heading=fromAlgaeToFishes" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Evolution </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading11" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse11" aria-expanded="false" href="#collapse11"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">500 million years ago <br> Fishes get skeletons</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse11" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading11"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">The earliest known creature with a skeleton evolves as a form of fish</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Fish" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Fish </a><br> <a href="/history/evolution/589?heading=fromAlgaeToFishes" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Evolution </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading12" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse12" aria-expanded="false" href="#collapse12"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">400 million years ago <br> Plants get out of the water</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse12" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading12"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">Plants, previously living only in the seas and rivers, begin to establish themselves on land</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Plant" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Plant </a><br> <a href="/history/evolution/589?heading=theFirstLandCreatures" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Evolution </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading13" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse13" aria-expanded="false" href="#collapse13"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">350 million years ago <br> Insects are up and away</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse13" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading13"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">Insects become the first creatures capable of living their full life span out of the water - and the first to master flight</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Evolution_of_insects" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Evolution of insects </a><br> <a href="https://en.wikipedia.org/wiki/Evolution_of_spiders" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Evolution of spiders </a><br> <a href="https://en.wikipedia.org/wiki/Carboniferous" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Carboniferous </a><br> <a href="https://en.wikipedia.org/wiki/Insect_flight" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Insect flight </a><br> <a href="/history/evolution/589?heading=theFirstLandCreatures" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Evolution </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading14" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse14" aria-expanded="false" href="#collapse14"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">340 million years ago <br> Amphibians get lungs</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse14" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading14"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">Amphibians develop lungs, enabling them to live on land as well as in the water</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Amphibian" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Amphibian </a><br> <a href="/history/evolution/589?heading=theFirstLandCreatures" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Evolution </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading15" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse15" aria-expanded="false" href="#collapse15"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">300 million years ago <br> Reptiles rule</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse15" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading15"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">Reptiles develop evolutionary advantages for adaptation to a wide range of environments</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Evolution_of_reptiles" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Evolution of reptiles </a><br> <a href="https://en.wikipedia.org/wiki/Mesozoic" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Mesozoic </a><br> <a href="https://en.wikipedia.org/wiki/Carboniferous" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Carboniferous </a><br> <a href="https://en.wikipedia.org/wiki/Evolution_of_mammals" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Evolution of mammals </a><br> <a href="/history/evolution/589?heading=reptiles" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Evolution </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading16" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse16" aria-expanded="false" href="#collapse16"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">250 million years ago <br> Earth has only one continent</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse16" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading16"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">The entire land surface of the earth merges into a single continent, known as Pangaea, which after about 50 million years splits in two</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Pangaea" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Pangaea </a><br> <a href="https://en.wikipedia.org/wiki/Supercontinent" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Supercontinent </a><br> <a href="/history/geography/644?section=surfaceOfTheEarth&heading=pangaea" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Geography </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading17" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse17" aria-expanded="false" href="#collapse17"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">225 million years ago <br> Dinosaurs inherit the earth</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse17" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading17"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">The dinosaurs dominate the planet in a way that no previous creature has been able to</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Dinosaur" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Dinosaur </a><br> <a href="/history/evolution/589?heading=reptiles" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Evolution </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading18" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse18" aria-expanded="false" href="#collapse18"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">200 million years ago <br> Single continent begins to crumble</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse18" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading18"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">The process of continental drift, beginning 200 million years ago, results eventually in our present arrangement of six continents</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Continental_drift" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Continental drift </a><br> <a href="https://en.wikipedia.org/wiki/Plate_tectonics" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Plate tectonics </a><br> <a href="https://en.wikipedia.org/wiki/Alfred_Wegener" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Alfred Wegener </a><br> <a href="/history/geography/644?section=surfaceOfTheEarth&heading=fromOneContinentToSix" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Geography </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading19" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse19" aria-expanded="false" href="#collapse19"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">170 million years ago <br> First tiny mammals</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse19" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading19"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">Mammals begin to make their appearance</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Evolution_of_mammals" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Evolution of mammals </a><br> <a href="https://en.wikipedia.org/wiki/Mammal" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Mammal </a><br> <a href="https://en.wikipedia.org/wiki/Triassic" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Triassic </a><br> <a href="https://en.wikipedia.org/wiki/Timeline_of_the_evolutionary_history_of_life" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Timeline of the evolutionary history of life </a><br> <a href="/history/evolution/589?heading=birdsAndMammals" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Evolution </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading20" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse20" aria-expanded="false" href="#collapse20"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">150 million years ago <br> Archaeopteryx links dynosaurs and birds</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse20" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading20"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">Archaeopteryx has the skeletal structure of a dinosaur and the feathers of a bird, intermediate between the two species</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Transitional_fossil" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Transitional fossil </a><br> <a href="https://en.wikipedia.org/wiki/Specimens_of_Archaeopteryx" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Specimens of Archaeopteryx </a><br> <a href="https://en.wikipedia.org/wiki/Archaeopteryx" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Archaeopteryx </a><br> <a href="https://en.wikipedia.org/wiki/Origin_of_birds" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Origin of birds </a><br> <a href="/history/evolution/589?section=11th15thCentury&heading=ivanIii" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Evolution </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading21" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse21" aria-expanded="false" href="#collapse21"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">125 million years ago <br> Birds appear on the scene</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse21" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading21"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">Primitive birds begin to feature in the fossil record</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Bird" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Bird </a><br> <a href="/history/evolution/589?heading=birdsAndMammals" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Evolution </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading22" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse22" aria-expanded="false" href="#collapse22"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">65 million years ago <br> Dinosaurs die out</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse22" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading22"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">In a very short space of time the dinosaurs die out, for reasons as yet uncertain</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Dinosaur" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Dinosaur </a><br> <a href="/history/evolution/589?heading=reptiles" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Evolution </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading23" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse23" aria-expanded="false" href="#collapse23"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">65 million years ago <br> Mammals in many forms</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse23" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading23"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">Mammals evolve in many new forms on land and in the water, using opportunities made possible by the extinction of the dinosaurs</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Evolution_of_mammals" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Evolution of mammals </a><br> <a href="https://en.wikipedia.org/wiki/Evolution_of_mammalian_auditory_ossicles" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Evolution of mammalian auditory ossicles </a><br> <a href="https://en.wikipedia.org/wiki/Mammal" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Mammal </a><br> <a href="/history/evolution/589?heading=birdsAndMammals" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Evolution </a><br> </div> </div> </div> </div> </div> </div> <div class="card"> <h5 class="card-header collapsed d-block mt-0" role="tab" id="heading24" data-toggle="collapse" data-parent="#accordion" aria-controls="collapse24" aria-expanded="false" href="#collapse24"> <div class="row"> <div class="col-lg-12"> <a href="javascript:void(0)">50 million years ago <br> Australia isolated</a> <span class="alignb"> <a href="javascript:void(0)"><i class="hw-icon"></i></a> <a href="javascript:void(0)"><i class="fa fa-wikipedia-w"></i></a> </span> </div> </div> </h5> <div id="collapse24" class="collapse multi-collapse" role="tabpanel" aria-labelledby="heading24"> <div class="card-body"> <div class="row"> <div class="col-md-12"> <p style="margin-bottom: 0;">Australia becomes a separate land mass, isolating its living creatures. They evolve into many species unique to the area</p> <div class="alignb"> <a href="https://en.wikipedia.org/wiki/Natural_history_of_Australia" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Natural history of Australia </a><br> <a href="https://en.wikipedia.org/wiki/Fauna_of_Australia" target="_blank" class="event-link"> <i class="fa fa-wikipedia-w"></i>  Fauna of Australia </a><br> <a href="/history/australia/522?section=toThe18thCenturyAd&heading=aPlaceApart" target="_blank" class="event-link"> <i class="hw-icon" style="font-size: 18px;"></i>  Australia </a><br> </div> </div> </div> </div> </div> </div> </div> </div> </div> <div class="justify-content-center p-0 m-3 mr-3 ml-3"> <div class="history-pagination"> <div class="prev-control-buttons d-flex"> <a href="https://www.historyworld.net/event-timelines?q=&from=&themes=&areas=&page=1" class="p-0 border-0"> <img src="https://www.historyworld.net/assets/img/Navigation-start.png" alt="Arrow" class="prev-button w-35" style="visibility:hidden"> </a> <a href="https://www.historyworld.net/event-timelines?q=&from=&themes=&areas=&page=0" class="p-0 border-0"> <img src="https://www.historyworld.net/assets/img/Navigation-previous.png" alt="Arrow" class="prev-button w-35" style="visibility:hidden"> </a> </div> <div class="pagination-numbers"> <span>Page</span> <span class="active-page">1</span> <span>of</span> <span id="total-pages"> 413 </span> </div> <div class="next-control-buttons d-flex"> <a href="https://www.historyworld.net/event-timelines?q=&from=&themes=&areas=&page=2" class="p-0 border-0"> <img src="https://www.historyworld.net/assets/img/Navigation-next.png" alt="Arrow" class="next-button w-35" style="visibility:"> </a> <a href="https://www.historyworld.net/event-timelines?q=&from=&themes=&areas=&page=413" class="p-0 border-0"> <img src="https://www.historyworld.net/assets/img/Navigation-end.png" alt="Arrow" class="next-button w-35" style="visibility:"> </a> </div> </div> </div> </div>  </div> </div> </section>     <div class="modal fade overflow-hidden pr-0" id="imgEnlargeModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true"> <div class="modal-dialog" style="height: calc(100vh - 3.5rem)" role="document"> <div style="height: max-content" class="modal-content"> <div class="modal-header"> <h5 class="modal-title" id="exampleModalLabel"></h5> <button type="button" class="close" data-dismiss="modal" aria-label="Close"> <span aria-hidden="true">×</span> </button> </div> <div class="modal-body overflow-auto"> <div class="d-flex flex-column text-center align-items-center mb-4"> <img src="" alt="Image" class="hw-modal-thumbnail width-auto"> <i></i> </div> <div class="d-flex flex-column"> <div class="modal-description mb-2"> <div class=""></div> </div> <div class="modal-collection mb-2"> <div class=""></div> </div> <div class="modal-museum-text mb-2"> <div class=""></div> </div> </div> </div> <div class="modal-footer"> <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button> </div> </div> </div> </div>   <div id="ezoic-pub-ad-placeholder-128"></div> <script> ezstandalone.cmd.push(function() { ezstandalone.showAds(128); 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