Stethacanthidae
Stethacanthidae is an extinct family of prehistoric holocephalians. It is estimated to have existed approximately between 380 and 300 million years ago. Members of this family are noted for their peculiar dorsal fin.
| Stethacanthidae | |
|---|---|
| Stethacanthus altonensis | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Holocephali |
| Order: | †Symmoriiformes |
| Family: | †Stethacanthidae |
| Genera | |
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