| Agassizodontidae Temporal range: 360–251 Ma Early Carboniferous to Permian |
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|---|---|
| Helicoprion bessonovi | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Superorder: | Selachimorpha |
| Order: | †Eugeneodontida |
| Family: | Agassizodontidae Zangerl, 1981 |
| Genera | |
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The Agassizodontidae are an extinct and poorly known family 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.