†Notidanodon Cappetta 1975 (cow shark)
Chondrichthyes - Hexanchiformes - Hexanchidae
Parent taxon: Hexanchidae according to D. J. Long et al. 1993
Sister taxa: Gladioserratus, Heptranchias, Hexanchus, Notidanus, Notorhynchus, Notorynchus
Subtaxa: Notidanodon lanceolatus, Notidanodon pectinatus
Ecology: nektonic carnivore