Lingulata - Lingulida - Acrothelidae
Parent taxon: Acrothelidae according to D. L. Bruton and D. A. T. Harper 2000
See also Puura and Holmer 1993 and Williams et al. 2000
Sister taxa: Conodiscinae, Eothele
Subtaxa: Acrothele Orbithele Schizopholis Spinulothele
Ecology: stationary low-level epifaunal suspension feeder
Distribution:
• Klabava of the Czech Republic (1 collection)
• Arenig of China (1)
• Ordovician of China (1), Sweden (4)
• Tremadoc of the Czech Republic (3), Iran (1), Norway (1), Poland (1)
• Solvan of Kazakhstan (2), Sweden (1)
• Amgan of the Czech Republic (1), Norway (1)
• Delamaran of Canada (4: British Columbia), Mexico (3), United States (5: Idaho, Montana, Nevada)
• Ordian of Australia (1)
• Cambrian of Antarctica (1), Australia (2), Canada (2: British Columbia, Newfoundland and Labrador), China (8), the Czech Republic (4), Denmark (2), France (1), Greenland (2), Kazakhstan (4), Kyrgyzstan (1), Mauritania (1), New Zealand (1), Norway (2), Pakistan (1), Spain (3), Sweden (2), United States (15: Alaska, Idaho, Montana, Nevada, New York, Pennsylvania, Texas, Utah)
• Caerfai of Canada (1: Nunavut)
Total: 84 collections including 95 occurrences