Ctenacanthus
| Ctenacanthus Temporal range: | |
|---|---|
| Agassiz's plate of C. major. | |
| Restoration of C. concinnus | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Order: | †Ctenacanthiformes |
| Family: | †Ctenacanthidae |
| Genus: | †Ctenacanthus Agassiz, 1837 |
| Type species | |
| Ctenacanthus major Agassiz, 1837 | |
| Species | |
|
See text | |
Ctenacanthus (from Greek: κτείς kteis, 'comb' and Greek: ἄκανθα akantha, 'spine') is an extinct genus of ctenacanthiform chondrichthyan. Remains have been found in the Bloyd Formation (Carboniferous Period) of Arkansas and the Cleveland Shale (Devonian Period) of Ohio in the United States and in South America.
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