ammonites
†superfamily Hybodontoidea Zangerl 1981 (elasmobranch)

Chondrichthyes - Hybodontiformes

Invalid subtaxa: Asteracanthus semiverrucosus Egerton 1854 [nomen dubium], Asteracanthus verrucosus Egerton 1854 [nomen dubium], Hybodus strictus Agassiz 1837 [nomen dubium]

Full reference: R. Zangerl. 1981. Chondrichthyes I: Paleozoic Elasmobranchii. Handbook of Paleoichthyology 3a

Parent taxon: Hybodontiformes according to M. Ginter et al. 2010

Sister taxa: Cassisodus, Doratodus, Gunnellodus, Hamiltonichthys, Hubeiodus, Lonchidiidae, Mesodmodus, Omanoselache, Onychoselache, Reesodus, Teresodus

Subtaxa: Acrodontidae, Acrorhizodus, Distobatidae, Homalodontidae, Hybodontidae, Polyacrodontidae, Ptychodontidae, Trichorhipis, Tristychiidae

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Ecology: nektonic carnivore