Rhynchonellata - Spiriferida - Trigonotretidae
Full reference: C. Schuchert. 1893. A classification of the Brachiopoda. American Geologist 11:141-167
Parent taxon: Trigonotretidae according to A. Williams et al. 2006
See also Waterhouse 2004
Sister taxa: Costuloplicinae, Neospiriferinae
Subtaxa: Aperispirifer Brachythyrinella Frechella Grantonini Neilotreta Sulciplica Tasmanospirifer Trigonotreta Trigonotretini
Ecology: stationary epifaunal suspension feeder
Distribution:
• Permian of Afghanistan (2 collections), Australia (274), Bhutan (1), Chile (2), China (15), India (14), Iran (1), Malaysia (3), New Zealand (26), Oman (9), Pakistan (19), the Russian Federation (1), Tajikistan (2), Thailand (9)
• Carboniferous of Argentina (8), Chile (1), Egypt (2), Iran (4)
• Devonian of United States (1: California)
Total: 394 collections including 435 occurrences