Ctenacanthus
Ctenacanthus is a prehistoric cartilaginous fish genus. Remains have been found in the Bloyd Formation in Arkansas, United States and in South America.Species
- †Ctenacanthus amblyxiphias Cope, 1891
- †Ctenacanthus buttersi St. John & Worthen, 1883
- †Ctenacanthus chemungensis Claypole, 1885
- †Ctenacanthus cliftonensis Branson & Mehl, 1938
- †Ctenacanthus concinnus Newberry, 1875
- †Ctenacanthus costellatus Traquair, 1884
- †Ctenacanthus elegans Tuomey, 1858 - Alabama
- †Ctenacanthus furcicarinatus Newberry, 1875
- †Ctenacanthus major Agassiz, 1843
- †Ctenacanthus maranhensis Santos, 1946
- †Ctenacanthus nodocostatus Hussakof & Bryant, 1918
- †Ctenacanthus terrelli Newberry, 1889
- †Ctenacanthus tumidus Newberry, 1889
; species brought into synonymy
- Ctenacanthus brevis Agassiz syn. of Avonacanthus Maisey 2010
