Order Hexanchiformes de Buen 1926 (shark)
PaleoDB taxon number: 34522
Parent taxon: Squalimorphi according to J. A. Long 2011
Sister taxa: Echinorhiniformes, Pristiphoriformes
Subtaxa: Chlamydoselachidae, Eonotidanus, Hexanchidae, Pachyhexanchus, Paraheptranchias, Paranotidanus, Pseudonotidanidae, Thrinax, Weltonia
Ecology: nektonic carnivore