Lingulata - Lingulida - Acrothelidae
Parent taxon: Acrotheloidea according to C. B. Skovsted et al. 2017
See also Brock and Cooper 1993, Bruton and Harper 2000, Puura and Holmer 1993 and Williams et al. 2000
Sister taxon: Botsfordiidae
Subtaxa: Acrothelinae Conodiscinae Eothele
Ecology: stationary low-level epifaunal suspension feeder
Distribution:
• Klabava of the Czech Republic (1 collection)
• Arenig of China (1)
• Ordovician of China (3), Sweden (4)
• Tremadoc of the Czech Republic (3), Iran (1), Norway (1), Poland (1)
• Amgan of the Czech Republic (1), Norway (1)
• Solvan of Australia (1), Kazakhstan (2), Sweden (1)
• Delamaran of Canada (4: British Columbia), Mexico (3), United States (5: Idaho, Montana, Nevada)
• Ordian of Australia (1)
• Cambrian of Antarctica (1), Australia (24), Canada (23: British Columbia, Newfoundland, Newfoundland and Labrador), China (8), the Czech Republic (4), Denmark (3), France (1), Greenland (2), Kazakhstan (4), Kyrgyzstan (1), Mauritania (1), New Zealand (1), Norway (2), Pakistan (1), Spain (3), Sweden (2), United States (23: Alaska, Idaho, Montana, Nevada, New York, Pennsylvania, Texas, Utah)
• Caerfai of Canada (1: Nunavut), United States (1: Nevada)
Total: 140 collections including 151 occurrences