Bluemarblewest

Geology Timeline

By JoslinF

  • Cambrian 570mya to] 500mya

    Cambrian 570mya to] 500mya
    The Cambrian period , earth has cover with water. All life lived in the oceans.

  • Ordovician 488,3mya -443.7mya

    Ordovician 488,3mya -443.7mya
    Earth was still under water during the Ordovician Period. There is still only marine life. The carbon dioxide was very high in the sky.

  • Silurian 433.7mya-416.0mya

    Silurian 433.7mya-416.0mya
    Animals and plants finally came on land. Huge storns were caused by the warmth of tropical oceans.

  • Devonian 419.2mya-3.2mya

    Devonian 419.2mya-3.2mya
    There were two supercontinents, named Gondwana and Euramerica.The fishes were more developed.Some fishes were up to 33 feet. The first forests arose as plants enlvoed strong, woody structures capable of supporting raised branches and leaves. Plants began spreading everywhere.

  • Carboniferous 359.2mya-299mya

    Carboniferous 359.2mya-299mya
    Millions of years plants debris made coal. The growth of forests removed the carbon dioxide. Also the forests caused a surplus of oxygen and many animals became huge Like the cockroaches and scorpions were three feet.

  • Permian 299mya-251mya

    Permian 299mya-251mya
    The supercontinent Pangaea caused the climate to drop. Which means it was a ice age,Pangaea caused the worst etinction the world has ever been through. 90% of marine was dead and 70% of land aminals were gone. 1 million volcanos were erupting which melted the ice and filled the air with poison.

  • Triassic 251mya-199mya

    Triassic 251mya-199mya
    Pangagaea was started to come apart. New animals appeared like dinosaurs. Volcanos cuased another extinctions but the dinosaurs survived.

  • Jurassic 201.3mya-145mya

    Jurassic 201.3mya-145mya
    The tropical forest caused the dinosaurs to be bigger and they ruled the world.

  • Cretaceous 145.5mys-65.5mya

    Cretaceous 145.5mys-65.5mya
    Continets were moving agian. Chicxulub crater caused hte extinction of more than half the planets species. New species evoled like the Sauropods. The flowering plants developed. Huge volcanic eruptied along the tectonic border.

  • Tertiary 65.5mya-2.6mya

    Tertiary 65.5mya-2.6mya
    Teritary has six parts, Paleocene,Eocene,Oligocene,Miocene, and Pliocene. The dinosaurs went extincted in the Cretaceous. Animals got smaller and were more evolving. Pangaea was separate, each chunk had its on habitant and animals. Earth was full of plants which cuased some animals to be able to eat plants instead of meat. There was a new species of fishs. Our human ancestors was during the Pllocene.

  • Quaternary 2.588mya-0.005mya

    Quaternary 2.588mya-0.005mya
    It was the ice age time. Mammals got more biger, got more furrry and then disappear. Humans evlove to modern form. Continents almost got to were they are today. The were no dinosaurs. Unstead there was huge herbivores, like mammoth,mastodon,and giant bison. THe ice age lasted for 100,000 years. River were caused by the ice melting and moutains were reshaped.