Alternative spelling: Richthofeniacea
Full reference: W. Waagen. 1885. Productus Limestone Fossils, Part IV, fas. 5. Salt Range Fossils, Palaeontologia Indica, Series 13 1(4):729-770
Parent taxon: Lyttoniidina according to A. Williams et al. 2000
Sister taxa: Lyttonioidea, Permianelloidea
Subtaxa: Crania permiana Cyclacanthariidae Forma Gemmellaroiidae Hercosiidae Prorichthofenia Prorichthofeniinae Richthofeniidae
Ecology: stationary low-level epifaunal suspension feeder
Distribution:
• Permian of Afghanistan (2 collections), Armenia (9), Azerbaijan (3), Cambodia (2), China (24), Greece (24), Guatemala (2), Iran (3), Italy (12), Japan (7), Mexico (23), Oman (13), Pakistan (84), the Russian Federation (3), Slovenia (3), Tajikistan (8), Thailand (3), Tunisia (11), Ukraine (1), United States (399: Alaska, Kansas, New Mexico, Oklahoma, Texas)
• Carboniferous of China (2), United States (25: Alaska, Oklahoma, Texas)
Total: 663 collections including 818 occurrences