Altholepis Cosmoselachus Cladodus Barbclabornia Ctenacanthus Symmorium Plesioselachus Dwykaselachus Gyracanthidae Goodrichthys Mesacanthus Glikmanius Plicatodus Tetanopsyrus Adamantina (fish) Ptomacanthus Aztecodus Gladbachus Saivodus Cheiracanthus Nerepisacanthus Kawichthys Cobelodus Poracanthodes Acanthodes Climatius Avonacanthus Brochoadmones Triodus Podoliacanthus Bransonella Nostolepis Ferromirum Triazeugacanthus Fanjingshania Dracopristis Gogoselachus Phoebodus Gyracanthides Squatinactis Arduodens Mcmurdodus Xylacanthus (fish) Mongolepidida Maghriboselache Elegestolepis Ozarcus Falcatidae Acanthodopsis Kaibabvenator Cl…

ladodoides Falcatus Symmoriidae Qianodus Akmonistion Gyracanthus Ischnacanthus Lebachacanthus Xenacanthus Thrinacodus Acanthodiformes Parexus Orthacanthus Phoebodontiformes Diplacanthiformes Ischnacanthiformes Cladoselachidae Stethacanthus Xenacanthida Climatiiformes Ctenacanthiformes Cladoselache Acanthodii Symmoriiformes Diplacanthus Antarctilamna Chondrichthyes 2018 in paleoichthyology