Cephalopoda - Nautilida

Full reference: A. K. Miller and W. Youngquist. 1949. American Permian nautiloids. Geological Society of America Memoir 41:1-218

Parent taxon: Clydonautilaceae according to C. Teichert et al. 1964

Sister taxa: Clydonautilidae, Ephippoceratidae, Gonionautilidae, Siberionautilidae

Subtaxa: Alexandronautilus, Bistrialites, Coelogasteroceras, Condraoceras, Hemiliroceras, Indonautilus, Liroceras, Paranautilus, Peripetoceras, Permonautilus, Perunautilus, Potoceras, Tomponautilus

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Type: Liroceras

Ecology: nektobenthic carnivore