Notorynchus Ayers 1855 (cow shark)
Chondrichthyes - Hexanchiformes - Hexanchidae
Parent taxon: Hexanchidae according to R. W. Purdy et al. 2001
Sister taxa: Gladioserratus, Heptranchias, Hexanchus, Notidanodon, Notidanus, Notorhynchus
Subtaxa: Notorynchus cepedianus, Notorynchus maculatus
Type: Notorynchus maculatus
Ecology: nektonic carnivore