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:
• Carboniferous of Canada (6: Alberta, Northwest Territories, Yukon collections), United States (2: Indiana)
• Givetian of France (4), United States (1: Missouri)
• Devonian to Carboniferous of the United Kingdom (1)
• Devonian of Afghanistan (6), Belgium (6), Canada (4: Ontario), China (5), Colombia (1), France (2), Germany (32), Libya (7), Luxembourg (2), Mauritania (1), Morocco (4), Myanmar (2), Spain (17), the United Kingdom (4), United States (505: Arizona, Illinois, Indiana, Iowa, Michigan, Missouri, New York, Ohio, Pennsylvania, Virginia, West Virginia, Wisconsin), Venezuela (7)
• Silurian of Canada (1: Nunavut)
Total: 620 collections including 727 occurrences