Full reference: W. Waagen. 1883. Productus Limestone Fossils, Part IV, fas. 2. Salt Range Fossils, Palaeontologia Indica, Series 13 1(4):391-546
Parent taxon: Lyttoniidina according to A. Williams et al. 2000
Sister taxa: Permianelloidea, Richthofenioidea
Subtaxa: Lyttoniidae Rigbyellidae
Ecology: stationary low-level epifaunal suspension feeder
Distribution:
• Cretaceous of United States (5: Kansas collections)
• Permian of Afghanistan (3), Armenia (16), Australia (3), Azerbaijan (14), Cambodia (1), Canada (1: British Columbia), China (290), Croatia (5), Greece (2), Guatemala (1), India (3), Indonesia (1), Iran (20), Italy (1), Japan (36), Laos (1), Malaysia (16), Mexico (7), Myanmar (1), Oman (1), Pakistan (81), the Russian Federation (10), Slovenia (3), Tajikistan (4), Thailand (24), Tunisia (8), Ukraine (1), United States (316: California, Montana, New Mexico, Oregon, Texas), Venezuela (1)
• Carboniferous to Permian of United States (1: California)
• Carboniferous of Belize (1)
Total: 878 collections including 1331 occurrences