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4100+ eon
There are any fossils recorded.

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2500-4100 eon
There are any fossils recorded.

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542-2500 eon
There are any fossils recorded.

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542- present
It introduced new organisms and life to the world.

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The age of invertebrates, most of the organisms that were found were on water and the sea lever was higher than ever with warm temperatures.

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444-416, 416-359
The age of the Fishes, The organisms that were found were mostly on water. cockroaches and dragon flies were first found. The climate on this age was warm and with a lot of swamps and forests.

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Age of the amphibians, the organisms found ere amphibians and reptiles. This climate was warm and with swamps with long tropical forest.

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Phanerozoic, Mesozoic: triassic, jurassic and cretaceous

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Phanerozoic, Mesozoic: triassic, jurassic and cretaceous

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251-201.6, 201.6-145.5, 145.5-65.5
The era of the dinosaurs, In this era there were fossils found from dinosaurs, crocodiles and pterosaurs were on the air. The land started to get the form today all the continents started to line up and modern rocky mountains too.

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phanerozoic, Cenozoic, Tertiary: Paleocene, Miocene , Pliocene

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phanerozoic, Cenozoic, Tertiary: Paleocene, Miocene , Pliocene

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2.6- 65.5
The Tertiary Period was the old Cenozoic Era. The climate change to dense forest grows, warm, damp, and temperature climate. Ferns, horsetails, and shrubby flowering plants make the underbrush while sequoias, pines, and palms grow tall.

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Present 2.6
The Quaternary has been characterized by several periods of glaciation (the "ice ages" of common lore) when ice sheets many kilometers thick have covered vast areas of the continents in temperate areas. During and between these glacial periods, rapid changes in climate

and sea level have occurred, and environments worldwide have been altered. These variations in

turn have driven rapid changes in life-forms, both flora, and fauna. Beginning some 200,000 years ago, they were responsible for the rise of modern humans. Bovids, including cattle, sheep, goats, antelope, and gazelle, were Flourished during this period. Cave lions, saber-Toothed cats, cave bears, giant deer, wooly rhinoceroses, and wooly mammoths were prevailing species. The climate of the Quaternary period showed several decreases in global temperature (glacial periods) separated by warm (interglacial) periods.