Chondrichthyes - Holocephalimorpha
Parent taxon: Chondrichthyes according to R. Lund and E. Grogan 2004
Sister taxa: Altholepidiformes, Antarctilamniformes, Bandringidae, Bradyodontida, Cladoselachimorpha, Clamydoselachidae, Ctenacanthimorpha, Ctenoptychius ordii, Desmiodontida, Doliodus, Duplisuggestus, Elegestolepidida, Eucentrurus, Euselachii, Fasciodus, Geisacanthus, Gladbachus, Gogoselachus, Gracilisuggestus, Holocephali, Iniopterygia, Kathemacanthidae, Leonotus, Machichnus, Mongolepidida, Mongolepidiformes, Obtusacanthus, Omalodontiformes, Palaeospondylidae, Phoebodontiformes, Plesioselachus, Polymerolepidiformes, Polysentoridae, Proprigalea, Protodontidae, Ptomacanthus, Pucapampellidae, Pucapumpella, Qianodus, Rhinobatiformes, Shenacanthus, Simmorius, Sinacanthida, Subterbranchialia, Thaumatacanthus, Wellingtonellidae, Xenacanthimorpha, Yuanolepis
Subtaxa: none
Ecology: nektonic carnivore
Distribution: found only at Gilmerton Ironstone (Carboniferous of the United Kingdom)