Temporal range: 360–199.6 Ma Early Carboniferous to Early Jurassic
200 px
Helicoprion bessonovi
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Superorder: Selachimorpha
Order: Eugeneodontida
Zangerl, 1981
Superfamilies and Families

see text

Eugeneodontida is an extinct and poorly known order of bizarre sharks. They possessed a unique "tooth-whorl" on the symphysis of the lower jaw as well as pectoral fins supported by long radials. The palatoquadrate was either fused to the skull or reduced. It is possible that they may belong to Holocephali.


External links


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