†infraclass Holocephalimorpha Lund and Grogan 1997 (cartilaginous fish)
Parent taxon: Chondrichthyes according to Lund and Grogan 1997
Sister taxa: Ancistriodus, Areyonga, Bradyodonti, Bradyodontida, Desmiodontida, Elasmobranchii, Elegestolepis, Eucentrurus, Euchondrocephali, Ewingia, Geisacanthus, Hamatus, Iniopterygia, Leonotus, Listracanthus, Machichnus, Mongolepididae, Ptomacanthus, Pucapumpella, Rhinobatiformes, Selachii, Simmorius, Subterbranchialia, Thaumatacanthus, Xystracanthus
Subtaxa: Harpacanthidae, Harpacanthus
Ecology: nektonic carnivore