Chondrichthyes - Chondrichthiomorphi
PaleoDB taxon number: 100271
Alternative spellings: Holocephala, Holocephala, Holocephala
Synonyms: Bradyodonti Arambourg and Bertin 1958 (no. 118045), Euchondrocephali Lund and Grogan 1997 (no. 199086)
Parent taxon: Chondrichthyes according to J. A. Long 2011
Sister taxa: Ancistriodus, Anodontacanthus, Batacanthus, Bradyodontida, Clamydoselachidae, Ctenoptychius ordii, Desmiodontida, Doliodus, Duplisuggestus, Elasmobranchii, Elegestolepis, Eucentrurus, Ewingia, Fasciodus, Galeorhinidae, Geisacanthus, Gracilisuggestus, Hamatus, Holocephalimorpha, Iniopterygia, Leonotus, Machichnus, Mongolepididae, Proprigalea, Ptomacanthus, Pucapampella, Pucapumpella, Rhinobatiformes, Simmorius, Subterbranchialia, Thaumatacanthus, Xystracanthus
Subtaxa: Ageleodus, Brachyrhizodus, Chimaeri, Cynopodius, Debeeriformes, Delphyodontos, Desmiodus, Edaphodontidae, Eugeneodontiformes, Euglossodus, Gregoriidae, Helodontiformes, Holocephalomorpha, Iniopterygiformes, Lagarodontidae, Macrodontacanthus, Menaspacanthus, Mesolophodus, Metaxyacanthus, Orodontiformes, Paraselachiamorpha, Paraselachimorpha, Petalodontiformes, Physonemus, Pseudodontichthyidae, Ptyktoptychion, Thoralodus, Trachyacanthi
Ecology: nektobenthic carnivore