Fossil Horse
Merychippus
Paleobiology
Paleobiology
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Hipparionine Horse
Hipparion gracile
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Porpoise
Phocoenidae
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Sixgill Shark
Hexanchus primigenius
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Fossil Ray-finned Fish
Diodon circumflexus
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shark
Carcharodon polygurus
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Armadillo
Dasypus
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American Bison
Bison bison
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Baleen Whale
Balaenopteridae
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Fossil Seed Fern
Alethopteris
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Rhinocerose
Rhinocerotidae
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Petosky Stone
Hexagonaria percarinata