Alternative spelling: Clydonautilaceae
Parent taxon: Nautilida according to S. Niko and R. H. Mapes 2016
See also Teichert et al. 1964
Sister taxa: Adeloceras, Aipoceratoidea, Aktubonautilidae, Alethynoceras, Anepheloceras, Anglonautlis, Askeatonolucidum, Bastindoceras, Bisiphytes, Capriocornites, Catastroboceras, Centroceratidae, Conchorhynchus, Danzikoceras, Dasbergoceras, Dentalium (Antalis) acumen, Dentoceratidae, Dzhinsetoceras, Exoticeras, Geitonoceras, Grzegorzewskia, Krykyloceras, Kummeloceras, Mahoningoceras, Menuthionautlis, Nautiloidea, Nautilorhynchus, Nautilus delphinus, Nautilus marcoui, Nautilus normannicus, Neobistrialites, Nikenautilus, Palaskensis, Parachouteauoceras, Paranautilidae, Permonautilidae, Piratoceras, Pleuronautilidae, Pseudocatastroboceras, Pseudophacoceras, Pseudostenopoceras, Pteronautilus, Rutoceratina, Soakinautilus, Syringonautilidae, Tainoceratina, Tainoceratoidea, Thaymastoceras, Thrincoceratidae, Uloceras, Vertorhizoceras, Yakutionautilus
Subtaxa: Clydonautilidae Ephippioceratidae Gonionautilidae Liroceratidae Siberionautilidae
Ecology: nektobenthic carnivore
Distribution:
• Triassic of Austria (24 collections), Canada (1: British Columbia), Hungary (1), India (5), Iran (2), Israel (4), Italy (2), Nepal (1), New Zealand (3), Peru (1), Romania (1), the Russian Federation (56), Slovenia (2), Svalbard and Jan Mayen (2), Ukraine (1), United States (23: Alaska, California, Nevada)
• Permian of Azerbaijan (5), Canada (2: Yukon), China (9), Germany (7), Iran (5), Italy (8), Kazakhstan (2), Madagascar (2), Mexico (1), Oman (1), Pakistan (3), the Russian Federation (8), Tajikistan (1), the United Kingdom (15), United States (24: New Mexico, Texas, Utah, Wyoming)
• Carboniferous of Ireland (9), Kazakhstan (4), Morocco (3), the Russian Federation (23), Ukraine (5), the United Kingdom (3), United States (57: Arizona, Arkansas, California, Illinois, Kentucky, Missouri, Ohio, Oklahoma, Pennsylvania, Texas)
Total: 326 collections including 417 occurrences