Cephalopoda - Nautilida - Ephippioceratidae
Full reference: A. K. Miller and W. Youngquist. 1949. American Permian nautiloids. Geological Society of America Memoir 41:1-218
Parent taxon: Clydonautilaceae according to C. Teichert et al. 1964
See also Miller and Youngquist 1949
Sister taxa: Clydonautilidae, Gonionautilidae, Liroceratidae, Siberionautilidae
Subtaxa: Ephippioceras Megaglossoceras
Type: Ephippioceras
Ecology: nektobenthic carnivore
Distribution:
• Permian of the Russian Federation (1 collection), United States (3: New Mexico, Texas)
• Carboniferous of Ireland (1), Kazakhstan (1), Morocco (1), the Russian Federation (11), Ukraine (4), United States (12: Arkansas, Illinois, Kentucky, Missouri, Oklahoma, Texas)
Total: 34 collections including 35 occurrences