Term
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Definition
Started 542 million years ago
Ended 251 million years ago
Pangaea started to form
divided into 6 periods |
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Term
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Definition
Coal Deposites
Brachopods are common in ocean
Forest and swamp cover most of land |
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Term
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Definition
88% of earths history
Tectonic activity altered fossils
Fossils are rare
First 3 eon of earths history |
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Term
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Definition
includes Cretaceous, Jurrasic, and Triassic period
AGE OF REPTILES
Dinosaurs are the dominant life |
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Term
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Definition
The end of the Paleozoic era
Mass extinaction
Pangaea comes together |
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Term
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Definition
AGE OF MAMMALS
Humans develop
Present day era |
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Term
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Definition
Mass extintion of dinosaurs
End of mesozoic ere |
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Term
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Definition
AGE OF FISHES
giant horse tails, ferns and sea berring plants develop. |
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