Rhynchonellata - Terebratulida - Notothyrididae
Parent taxon: Cryptonelloidea according to A. Williams et al. 2006
Sister taxa: Cimicinellidae, Cranaenidae, Cryptonellidae, Labaiidae, Romingerina, Zhongpingia
Subtaxa: Alwynia Chondronia Cryptacanthiinae Enallosia Gefonia Levinotothyris Notothyrina Notothyris Pseudorostranteris Rostranteris Timorina
Ecology: stationary low-level epifaunal suspension feeder
Distribution:
• Triassic of China (1 collection), the Russian Federation (2), United States (31: Arizona, California, Idaho, Nevada, Utah, Wyoming)
• Permian of Afghanistan (1), Armenia (4), Australia (1), Azerbaijan (14), Canada (2: Nunavut), China (78), Croatia (1), Greece (2), Hungary (2), India (1), Indonesia (2), Iran (13), Italy (7), Japan (2), Laos (2), Malaysia (1), Mexico (9), Myanmar (2), Nepal (1), Oman (1), Pakistan (132), the Russian Federation (12), Slovenia (1), Tajikistan (17), Thailand (15), Tunisia (5), Türkiye (1), Ukraine (32), United States (119: Nevada, New Mexico, Oregon, Texas), Venezuela (3)
• Carboniferous of China (3), United States (3: Alaska, California)
Total: 523 collections including 871 occurrences