Chondrichthyes - Hexanchiformes - Hexanchidae

Parent taxon: Hexanchidae according to D. J. Long et al. 1993

Sister taxa: Gladioserratus, Hexanchus, Notidanodon, Notidanus, Notorhynchus, Notorynchus

Subtaxa: Heptranchias cinereus, Heptranchias howellii, Heptranchias perlo

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Type: Heptranchias cinereus

Ecology: nektonic carnivore