Ptychodontidae
Appearance
Ptychodontidae Temporal range: Cretaceous to Paleogene
| |
---|---|
![]() | |
Ptychodus janewayii teeth (bottom row) from Cope 1874 | |
Scientific 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
- ^ The paleobioloy Database Ptychodontidae entry accessed on 8/23/09