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12 Cards in this Set
- Front
- Back
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Echinodermata
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≈550 mya
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Urochordata
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≈540 mya
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Cephalochordata
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≈520 mya
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Vertebrata
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≈525 mya (may not be used in essay?)
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Agnatha
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490 mya
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Placodermi
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470 mya
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Chondrichthyes
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450 mya
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Osteichthyes
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450-425 mya
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Amphibia
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370 mya
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Reptilia
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300 mya
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Aves
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250 mya
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Mammalia
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300-200 mya
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