Rhynchonellata - Spiriferida - Spinocyrtiidae
Parent taxon: Cyrtospiriferoidea according to A. Williams et al. 2006
See also Pitrat 1975
Sister taxa: Conispiriferidae, Cyrtospiriferidae
Subtaxa: Acutoria Alatiformia Carpinaria Duryeella Eosyringothyris Incertia Mediospirifer Orthospirifer Platyrachella Spinocyrtia Subcuspidella
Type: Spinocyrtia
Ecology: stationary epifaunal suspension feeder
Distribution:
• Osagean of Canada (1: Northwest Territories collection)
• Carboniferous of Canada (5: Alberta, Northwest Territories, Yukon), United States (2: Indiana)
• Devonian to Carboniferous of the United Kingdom (1)
• Devonian of Afghanistan (6), Belgium (2), Canada (4: Ontario), China (5), Colombia (1), France (6), Germany (14), Libya (7), Luxembourg (2), Mauritania (1), Morocco (3), Myanmar (2), Spain (17), the United Kingdom (4), United States (506: Arizona, Illinois, Indiana, Iowa, Michigan, Missouri, New York, Ohio, Pennsylvania, Virginia, West Virginia, Wisconsin), Venezuela (7)
• Silurian of Canada (1: Nunavut)
Total: 597 collections including 704 occurrences