Ptychodontidae

Ptychodontidae is a family of extinct neoselachian[1][2] sharks which lived from the Cretaceous to the Paleogene.[3]

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
Clade: Neoselachii
Family: Ptychodontidae
Genera

References

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