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 and Popov et al. 2025
Sister taxa: Chimaeri, Debeeriformes, Debeeriiformes, Delphyodontos, Edaphodus, Eugeneodontiformes, Helodontiformes, Iniopterygiformes, Macrodontacanthus, Menaspacanthus, Orodontiformes, Paraselachiamorpha, Paraselachimorpha, Petalodontiformes, Thoralodus, Trachyacanthi, Pseudodontichthyidae, Desmiodus, Euglossodus, Gregoriidae, Mesolophodus, Ageleodus, Cynopodius, Metaxyacanthus, Lagarodontidae, Brachyrhizodus
Subtaxa: Chimaeriformes Chondrenchelyiformes Cochliodontiformes Copodontiformes Menaspiformes Psammodontiformes Squalorajiformes
Ecology: nektobenthic carnivore