Chondrichthyes - Elasmobranchii

Alternative spelling: Ctenacanthida

Parent taxon: Cladodontomorphi according to M. Ginter et al. 2010

Sister taxa: Cladoselachiformes, Euselachii, Hybodontiformes, Squatinactiformes, Symmoriiformes

Subtaxa: Acandylacanthus, Arauzia, Coelosteus, Ctenacanthidae, Ctenacanthoidea, Echinodus, Eoorodus, Goodrichthys, Heslerodidae, Hybocladodus, Kaibabvenator, Lambdodus, Moyacanthus, Nanoskalme, Neosaivodus, Pororhiza, Raineria, Saivodus, Styracodus

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Ecology: nektonic carnivore