Synonyms: Mooreoceratidae Shimanskiy 1954, Shikanoceratidae Shimansky 1956
Parent taxon: Pseudorthocerida according to B. Kröger 2008
See also Barskov 1968, Chen et al. 1981, Crick 1981, Flower 1962, Frey 1995, Kröger and Mapes 2005, Miagkova 1967, Sweet 1964 and Teichert et al. 1964
Sister taxa: Spyroceratidae, Trematoceratidae
Subtaxa: Buchanoceras Cayutoceratinae Dinocycloceras Dolorthoceras Geidoloceras Hebetorthoceras Houdongoceras Mitorthoceras Mongoceras Neocycloceras Probatoceras Pseudactinoceratinae Pseudorthoceratinae Subdoloceras Subormoceras Uralorthoceras
Ecology: fast-moving nektonic carnivore
Distribution:
• Permian of Argentina (1 collection), Armenia (1), Australia (2), Azerbaijan (11), China (9), Colombia (3), Iran (10), Italy (2), Japan (3), Malaysia (1), Pakistan (1), the Russian Federation (8), Tajikistan (1), Timor-Leste (1), United States (35: Arizona, California, Idaho, Kansas, Nevada, New Mexico, Texas, Utah, Wyoming), Venezuela (2)
• Carboniferous of Australia (2), Canada (2: Nova Scotia), Czechia (2), Ireland (1), Kazakhstan (1), Ukraine (1), the United Kingdom (23), United States (247: Alabama, Arkansas, California, Colorado, Illinois, Indiana, Kansas, Kentucky, Maryland, Michigan, Missouri, Montana, New Mexico, Ohio, Oklahoma, Texas)
• Devonian of Australia (1), Germany (4), Kyrgyzstan (1), Morocco (15), the Russian Federation (1)
• Silurian of China (1), Morocco (1), the Russian Federation (5)
• Ordovician of Canada (1: Newfoundland and Labrador)
Total: 400 collections including 476 occurrences