Bivalvia - Pectinida - Deltopectinidae
Alternative spelling: Cyrtorostridae
Full reference: N. D. Newell and D.W. Boyd. 1995. Pectinoid bivalves of the Permian-Triassic crisis. Bulletin of the American Museum of Natural History 227:1-95
Parent taxon: Deltopectinidae according to J. G. Carter et al. 2011
See also Bouchet et al. 2010 and Newell and Boyd 1995
Sister taxa: Deltopecten, Deltopectininae, Squamuliferipectininae, Vorkutopecten
Subtaxa: Cyrtorostra
Distribution:
• Permian to Triassic of India (3 collections)
• Permian of Australia (13), Canada (2: Nunavut), China (4), Greece (1), Greenland (1), India (3), Japan (1), Mexico (1), Mongolia (1), Nepal (1), Oman (1), Pakistan (18), the Russian Federation (18), United States (70: Idaho, Montana, Nevada, Texas, Utah, Wyoming)
Total: 138 collections including 144 occurrences