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
Distribution:
• Triassic of Austria (24 collections), Canada (1: British Columbia), Hungary (1), India (5), Iran (2), Israel (4), Italy (2), Nepal (1), New Zealand (2), Peru (1), Romania (1), the Russian Federation (56), Slovenia (2), Svalbard and Jan Mayen (2), Ukraine (1), United States (23: Alaska, California, Nevada)
• Leonard of United States (1: Utah)
• 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 (21: New Mexico, Texas, Utah, Wyoming)
• Virgilian of United States (15: Illinois, Texas)
• Desmoinesian of United States (6: Missouri, Oklahoma, Pennsylvania, Texas)
• Westphalian of United States (1: Kentucky)
• Carboniferous of Ireland (9), Kazakhstan (4), Morocco (3), the Russian Federation (23), Ukraine (5), the United Kingdom (3), United States (35: Arizona, Arkansas, California, Ohio, Oklahoma, Texas)
Total: 323 collections including 414 occurrences