Ctenacanthus


Ctenacanthus is an extinct genus of ctenacanthiform chondrichthyan. Remains have been found in the Bloyd Formation of Arkansas and the Cleveland Shale of Ohio in the United States and in South America.

Valid species

  • Ctenacanthus buttersi St. John & Worthen, 1883
  • Ctenacanthus chemungensis Claypole, 1885
  • Ctenacanthus concinnus Newberry, 1875
  • Ctenacanthus denticulatus McCoy, 1848
  • Ctenacanthus formosus Newberry, 1873
  • Ctenacanthus harrissi Caster, 1930
  • Ctenacanthus lamborni Wells, 1944
  • Ctenacanthus major Agassiz, 1843
  • Ctenacanthus pellensis St. John & Worthen, 1883
  • Ctenacanthus sculptus St. John & Worthen, 1875
  • Ctenacanthus terrelli Newberry, 1889
  • Ctenacanthus tumidus Newberry, 1889
  • Ctenacanthus vetustus Eastman, 1902
  • Ctenacanthus wrightii Newberry, 1884
  • Ctenacanthus amblyxiphias Cope, 1891

    Palaeoecology

Dental microwear texture analysis of C. concinnus teeth shows that the species was an opportunistic feeder that would have eaten a variety of animals, including other chondrichthyans and ectocochleate cephalopods.