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Ptychodontidae

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Ptychodontidae
Temporal range: 99.6–61.7 Ma Cretaceous to Paleogene
Ptychodus janewayii teeth (bottom row) from Cope 1874
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Chondrichthyes
Subclass:
Elasmobranchii
Superorder:
Selachimorpha
Order:
†Hybodontiformes
Superfamily:
Hybodontoidea
Family:
Ptychodontidae
Genera

Ptychodontidae is a family of extinct hybodontiform sharks which lived from the Cretaceous to the Paleogene.[1]

References

  1. ^ The paleobioloy Database Ptychodontidae entry accessed on 8/23/09


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