Chondrichthyes - Holocephalomorpha
Alternative spelling: Holocephalimorpha
Parent taxon: Holocephali according to J. A. Ebersole et al. 2022
See also Goto and Okura 2004, Gouiric-Cavalli et al. 2015, Long 2011, Lund and Grogan 2004, Nelson 2006, Nelson et al. 2016, Popov et al. 2020, Popov et al. 2025 and van der Laan 2019
Sister taxa: Chimaeri, Debeeriformes, Debeeriiformes, Delphyodontos, Desmiodontidae, Desmiodus, Edaphodus, Eugeneodontiformes, Gregoriidae, Harpacanthidae, Helodontiformes, Iniopterygiformes, Lagarodontidae, Macrodontacanthus, Menaspacanthus, Orodontiformes, Paraselachiamorpha, Paraselachimorpha, Petalodontiformes, Thoralodus, Trachyacanthi, Ageleodus, Cynopodius, Metaxyacanthus, Euglossodus, Mesolophodus
Subtaxa: Chimaeriformes Chimaerimorpha Cochliodontomorpha Copodontiformes Psammodontiformes