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11 Cards in this Set
- Front
- Back
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Cambrian Period
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542 - 488 Ma
1st shelled organisms |
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Ordovician Period
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488 - 444 Ma
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Silurian Period
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444 - 416 Ma
1st jawed fish |
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Devonian Period
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416 - 360 Ma
1st amphibians 1st insects 1st land plants |
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Carboniferous Period
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360 - 299 Ma
1st reptiles 1st mammal-like reptiles |
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Permian Period
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299 - 251 Ma
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Triassic Period
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251 - 200 Ma
First mammals First dinosaurs |
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Jurassic Period
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200 - 146 Ma
First birds |
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Cretaceous Period
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146 - 66 Ma
First placental mammals Extinction of dinosaurs |
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Tertiary Period
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66 - 1.8 Ma
First horses First whales First apes Earliest homo |
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Quaternary Period
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1.8 Ma - Present
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