Agassizodontidae
| Use attributes for filter ! | |
| Scientific name | Helicoprionidae |
|---|---|
| Rank | Family |
| Higher classification | Eugeneodontida |
| Family | †Helicoprionidae; Karpinsky, 1911 |
| Class | Chondrichthyes |
| Date of Reg. | |
| Date of Upd. | |
| ID | 3050068 |
About Agassizodontidae
The Helicoprionidae are an extinct, poorly known family of bizarre holocephalids within the poorly understood order Eugeneodontida. Members of the Helicoprionidae possessed a unique "tooth-whorl" on the symphysis of the lower jaw and pectoral fins supported by long radials.