Chondrichthyes - Clamydoselachidae
Parent taxon: Chondrichthyes according to Y. Yabumoto and T. Uyeno 1994
Sister taxa: Altholepidiformes, Antarctilamniformes, Bandringidae, Bradyodontida, Cladoselachimorpha, Ctenacanthimorpha, Ctenoptychius ordii, Desmiodontida, Doliodus, Duplisuggestus, Elasmobranchii, Elegestolepidida, Eucentrurus, Fasciodus, Geisacanthus, Gladbachus, Gogoselachus, Gracilisuggestus, Holocephali, Holocephalimorpha, Iniopterygia, Karksilepis, 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 Nemuro (Loc. 1) (Cretaceous of Japan)