†family Harpacanthidae Lund and Grogan 1997 (chimaera)
Chondrichthyes - Harpacanthidae
Parent taxon: Holocephali according to R. van der Laan 2019
See also Lund and Grogan 2004
Sister taxa: Chimaeri, Debeeriformes, Debeeriiformes, Delphyodontos, Desmiodontidae, Desmiodus, Edaphodus, Eugeneodontiformes, Gregoriidae, Helodontiformes, Holocephalomorpha, Iniopterygiformes, Lagarodontidae, Macrodontacanthus, Menaspacanthus, Orodontiformes, Paraselachiamorpha, Paraselachimorpha, Petalodontiformes, Thoralodus, Trachyacanthi, Mesolophodus, Metaxyacanthus, Ageleodus, Euglossodus, Cynopodius
Subtaxa: Harpacanthus
Type: Harpacanthus
Ecology: nektobenthic carnivore
Distribution: found only at Gilmerton Ironstone (Carboniferous of the United Kingdom)