Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Parent taxon: Trigonirhynchiidae according to A. Williams et al. 2002
See also Jin and Chatterton 1997 and Savage and Goodwin 1998
Sister taxa: Ancillotoechia, Angustispatulata, Hemitoechiinae, Ptychomalotoechia, Ripidiorhynchinae, Rostricellulinae, Virginiatinae
Subtaxa: Agarhyncha Aratoechia Astua Cupularostrum Hercotrema Iberirhynchia Kirkirhynchus Lissopleura Macropotamorhynchus Microsphaeridiorhynchus Moorefieldella Morphorhynchus Myrmirhynx Nasonirhynchia Nekhoroshevia Oligoptycherhynchus Oxypleurorhynchia Porthmorhynchus Savagerhynchus Sinotectirostrum Stenorhynchia Stenorhynchites Sufetirhyncha Tetratomia Trigonirhynchia Wilsoniella
Ecology: stationary epifaunal suspension feeder
Distribution:
• Carboniferous of Canada (30: Alberta collections), Libya (7), United States (8: Arkansas, Iowa, Nevada, Oklahoma, Texas)
• Givetian of France (4)
• Devonian of Algeria (1), Argentina (1), Armenia (2), Austria (1), Canada (7: Alberta, British Columbia, Yukon), China (2), the Czech Republic (4), France (4), Germany (8), Kyrgyzstan (1), Libya (21), Luxembourg (1), Mauritania (1), Mongolia (2), Morocco (1), Peru (2), the Russian Federation (5), Spain (5), United States (279: Alaska, Arizona, Indiana, Iowa, Maryland, Michigan, Missouri, Montana, Nevada, New York, Ohio, Oklahoma, Pennsylvania, Virginia, West Virginia, West Virginia, Maryland, Pennsylvania, Wisconsin)
• Whitwellian of Canada (4: Northwest Territories)
• Jaani of Estonia (1), Lithuania (1)
• Silurian to Devonian of Mauritania (1), Morocco (1), Spain (1), United States (1: Oklahoma)
• Silurian of Austria (1), Canada (5: British Columbia, Northwest Territories, Quebec), the Czech Republic (25), Estonia (7), Latvia (3), Lithuania (31), Mexico (4), Morocco (1), Norway (7), the Russian Federation (2), Spain (3), Sweden (18), Ukraine (3), the United Kingdom (51), United States (6: California, Indiana, New York, Virginia, West Virginia)
Total: 574 collections including 614 occurrences