Chondrichthyes - Euselachii

Full reference: R. Zangerl. 1981. Chondrichthyes I: Paleozoic Elasmobranchii. Handbook of Paleoichthyology 3a

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

Sister taxa: Acronemus, Hueneichthys, Hybodontida, Neoselachii, Orectoloboidei, Sphenacanthidae, Squatinoidei, Surcaudalus, Synechodontidae

Subtaxa: Holmesella, Protacrodontidae

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Ecology: nektonic carnivore