Ptychodontidae
Ptychodontidae Temporal range: 99.6–61.7 Ma | |
---|---|
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
- ↑ The paleobioloy Database Ptychodontidae entry accessed on 8/23/09
This article is issued from Wikipedia - version of the 5/1/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.