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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 Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Subdivision: Selachimorpha
Order: Lamniformes
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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