Cephalopoda - Pseudorthocerida
Full reference: I. S. Barskov. 1968. K evolutsii otryada Pseudorthoceratida (Golovonogye Mollyuski). Vsesoyusnoe Paleontologicheskogo Obchestvo, Trudy XII sessii Vsesoyusnovo Paleontologicheskogo Obchestvo 1968:90-97
Parent taxon: Orthoceratoidea according to A. Pohle et al. 2022
See also Evans 2005 and Kröger 2008
Sister taxa: Actinocerida, Dissidocerida, Lituitida, Offleyoceratidae, Orthocerida, Paraphragmitidae, Protobactritidae, Riocerida, Slemmestadoceras
Subtaxa: Pseudorthoceratidae Spyroceratidae
Ecology: fast-moving nektonic carnivore
Distribution:
• Leonard of United States (1: Wyoming collection)
• Permian of Argentina (1), Armenia (1), Australia (2), Azerbaijan (13), China (47), Colombia (3), East Timor (1), Greece (1), Iran (15), Italy (4), Japan (3), Malaysia (1), Mexico (6), Oman (1), Pakistan (1), the Russian Federation (8), Tajikistan (5), United States (34: Arizona, California, Idaho, Kansas, Nevada, New Mexico, Texas, Utah, Wyoming), Venezuela (2)
• Virgilian of United States (58: Illinois, Kansas, Maryland, New Mexico, Texas)
• Desmoinesian of United States (50: Missouri, Oklahoma, Texas)
• Atokan of United States (3: Oklahoma, Texas)
• Chesterian of United States (4: Arkansas, Oklahoma)
• Osagean of United States (1: Indiana)
• Carboniferous to Permian of Japan (1)
• Mississippian of United States (3: California, Colorado, Indiana)
• Carboniferous of Argentina (1), Australia (2), the Czech Republic (2), Ireland (1), Kazakhstan (1), the Russian Federation (1), Ukraine (1), the United Kingdom (26), United States (160: Alabama, Arkansas, California, Indiana, Kansas, Kentucky, Maryland, Montana, Nevada, New mexico, Ohio, Oklahoma, Texas)
• Devonian of Australia (1), Canada (1: Ontario), the Czech Republic (10), Germany (4), Kyrgyzstan (1), Morocco (17), the Russian Federation (2), United States (62: Colorado, Indiana, New York, Pennsylvania)
• Silurian of Canada (3: Northwest Territories), China (2), the Czech Republic (1), Germany (2), Italy (4), Morocco (1), Poland (3), the Russian Federation (5), United States (4: Alaska, New York)
• Ordovician of Canada (29: Manitoba, Newfoundland and Labrador, Northwest Territories, Nunavut, Ontario, Quebec, Saskatchewan), Estonia (5), Greenland (1), Norway (6), the United Kingdom (1), United States (25: Colorado, Illinois, Iowa, Wisconsin, Indiana, Ohio, Iowa, Michigan, Minnesota, Missouri, New York, Ohio, South Dakota, Tennessee, Virginia, Wyoming)
• Chazy of Canada (1: Quebec)
• Whiterockian of United States (2: California)
Total: 658 collections including 860 occurrences