Chondrichthyes - Xenacanthimorpha
Parent taxon: Chondrichthyes according to R. van der Laan 2019
See also Ginter et al. 2010, Long 2011 and Nelson et al. 2016
Sister taxa: Altholepidiformes, Antarctilamniformes, Bandringidae, Bradyodontida, Cladoselachimorpha, Clamydoselachidae, Ctenacanthimorpha, Ctenoptychius ordii, Desmiodontida, Doliodus, Duplisuggestus, Elasmobranchii, Elegestolepidida, Eucentrurus, Fasciodus, Geisacanthus, Gladbachus, Gogoselachus, Gracilisuggestus, Holocephali, Holocephalimorpha, Iniopterygia, Kathemacanthidae, Leonotus, Machichnus, Mongolepidida, Mongolepidiformes, Obtusacanthus, Omalodontiformes, Palaeospondylidae, Phoebodontiformes, Plesioselachus, Polymerolepidiformes, Polysentoridae, Proprigalea, Protodontidae, Ptomacanthus, Pucapampellidae, Pucapumpella, Qianodus, Rhinobatiformes, Shenacanthus, Simmorius, Sinacanthida, Subterbranchialia, Thaumatacanthus, Wellingtonellidae, Yuanolepis
Subtaxa: Bransonelliformes Xenacanthiformes
Ecology: nektonic carnivore