†family Spirolegoceratidae Nassichuk 1970 (ammonite)
Cephalopoda - Ammonoida - Spirolegoceratidae
Parent taxon: Neoicoceratoidea according to T. B. Leonova and O. P. Shilovsky 2014
See also Korn 2006 and Leonova 2002
Sister taxa: Anuitidae, Aulacogastrioceratidae, Eupleuroceratidae, Metalegoceratidae, Neoicoceratidae, Paragastrioceratidae, Pseudogastrioceratidae
Subtaxa: Spirolegoceratinae Sverdrupitinae
Ecology: fast-moving nektonic carnivore
Distribution:
• Permian of Australia (3 collections), Canada (8: Nunavut), Mongolia (1), the Russian Federation (20), United States (1: Idaho)
Total: 33 collections including 40 occurrences