†order Debeeriiformes (chimaera)
Chondrichthyes - Debeeriiformes
Parent taxon: Holocephali according to R. van der Laan 2019
See also Long 2011, Nelson 2006 and Nelson et al. 2016
Sister taxa: Chimaeri, Debeeriformes, Delphyodontos, Desmiodontidae, Desmiodus, Edaphodus, Eugeneodontiformes, Gregoriidae, Harpacanthidae, Helodontiformes, Holocephalomorpha, Iniopterygiformes, Lagarodontidae, Macrodontacanthus, Menaspacanthus, Orodontiformes, Paraselachiamorpha, Paraselachimorpha, Petalodontiformes, Thoralodus, Trachyacanthi, Ageleodus, Metaxyacanthus, Euglossodus, Cynopodius, Mesolophodus
Subtaxa: Debeeriidae
Ecology: nektobenthic carnivore
Distribution:
• Carboniferous of United States (4: Montana collections)
Total: 4 collections each including a single occurrence