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11 Cards in this Set
- Front
- Back
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cambrian
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aquatic life only, first vertebrates, 550
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ordovician
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invertebrates diverse and dominate, first mass extinction 500
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silurian
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jawless fish, first terrestrial plant/animal life 400
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devonian
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first amphibians, fishes diversify, second mass extinction 400
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carboniferous
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first reptiles! 300
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permian
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insects/ reptiles diversify, 3rd mass extinction 300
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triassic
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first dinosaurs! 4th extinction 200
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jurassic
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first mammals/birds 200
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cretacious
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first modern fish/birds, dinosaurs dominate, 5th mass extinction, 200
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tertiary
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origin of human life 65-5
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quaternary
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modern human life, 1.8 - .045
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