†order Debeeriiformes (chimaera)
Chondrichthyes - Debeeriiformes
Parent taxon: Holocephali according to J. S. Nelson et al. 2016
See also Long 2011 and Nelson 2006
Sister taxa: Chimaeri, Debeeriformes, Delphyodontos, Edaphodus, Eugeneodontiformes, Helodontiformes, Holocephalomorpha, Iniopterygiformes, Macrodontacanthus, Menaspacanthus, Orodontiformes, Paraselachiamorpha, Paraselachimorpha, Petalodontiformes, Thoralodus, Trachyacanthi, Pseudodontichthyidae, Desmiodus, Euglossodus, Gregoriidae, Mesolophodus, Ageleodus, Cynopodius, Metaxyacanthus, Lagarodontidae, Brachyrhizodus
Subtaxa: Debeeriidae
Ecology: nektobenthic carnivore
Distribution:
• Carboniferous of United States (4: Montana collections)
Total: 4 collections each including a single occurrence