Alternative spelling: Clydonautilaceae
Parent taxon: Nautilida according to S. Niko and R. H. Mapes 2016
See also Teichert et al. 1964
Sister taxa: Adeloceras, Alethynoceras, Anepheloceras, Anglonautlis, Askeatonolucidum, Bastindoceras, Bisiphytes, Capriocornites, Centroceratidae, Conchorhynchus, Danzikoceras, Dentalium (Antalis) acumen, Domatoceratina, Dzhinsetoceras, Exoticeras, Geitonoceras, Grzegorzewskia, Krykyloceras, Liroceratina, Menuthionautlis, Nautiloidea, Nautilorhynchus, Nautilus delphinus, Nautilus marcoui, Nautilus normannicus, Palaskensis, Paranautilidae, Piratoceras, Pteronautilus, Rutoceratina, Soakinautilus, Solenochilina, Syringonautilidae, Tainoceratina, Temnocheilina, Thaymastoceras, Uloceras, Vertorhizoceras, Yakutionautilus
Subtaxa: Clydonautilidae Gonionautilidae Siberionautilidae
Ecology: nektobenthic carnivore
Distribution:
• Triassic of Austria (22 collections), Canada (1: British Columbia), India (3), Iran (2), Nepal (1), New Zealand (3), Romania (1), the Russian Federation (36), Slovenia (1), Svalbard and Jan Mayen (2), Ukraine (1), United States (11: Alaska, California, Nevada)
• Permian of Azerbaijan (1)
Total: 85 collections including 105 occurrences