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 and C. Klug 2024
See also Evans 2005, King and Evans 2019, Kröger 2008 and Pohle et al. 2022
Sister taxa: Orthoceras acum, Orthoceras austriacum, Orthoceras baconicum, Orthoceras billiemense, Orthoceras blakei, Orthoceras celticum, Orthoceras increscens, Orthoceras indoaustralicum, Orthoceras lateseptatum, Orthoceras lennaense, Orthoceras mojsisovicsi, Orthoceras multilabiatum, Orthoceras nodosum, Orthoceras pulchellum, Orthoceras pulchristriatum, Orthoceras rotundulum, Orthoceras sandlingense, Orthoceras shastense, Orthoceras spitiense, Orthoceras styriacum, Orthoceras subellipticum, Orthoceras subtiliseptatum, Orthoceras triadicum, Orthoceras variestriatum
Subtaxa: Pseudorthoceratidae Spyroceratidae Trematoceratidae
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of the Russian Federation (1 collection)
• Triassic of Afghanistan (2), Austria (16), Bosnia and Herzegovina (5), China (7), Hungary (4), India (3), Italy (13), Japan (1), Kazakhstan (8), Nepal (1), Romania (9), the Russian Federation (15), Switzerland (17), Turkey (1), United States (18: Idaho, Nevada), Vietnam (1)
• 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 (35: Arizona, California, Idaho, Kansas, Nevada, New Mexico, Texas, Utah, Wyoming), Venezuela (2)
• Carboniferous to Permian of Japan (1)
• 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 (279: Alabama, Arkansas, California, Colorado, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, 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)
• Whiterockian of United States (2: California)
• Chazyan of Canada (1: Quebec)
• 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)
Total: 780 collections including 995 occurrences