Rhynchonellata - Rhynchonellida - Acanthothirididae
Parent taxon: Rhynchonelloidea according to A. Williams et al. 2002
Sister taxa: Inaequalibellirostridae, Nucinulidae, Platyterorhynchidae, Rhynchonellidae, Sapphicorhynchidae, Lepidocyclidae
Subtaxa: Acanthorhynchiinae Acanthothiridinae
Type: Acanthothiris
Ecology: stationary epifaunal suspension feeder
Distribution:
• Cretaceous of Antarctica (3 collections), the Czech Republic (2)
• Heterian of New Zealand (2)
• Jurassic of Afghanistan (1), Austria (1), Bulgaria (9), France (85), Georgia (2), Germany (13), Hungary (2), Kenya (1), Morocco (5), New Zealand (30), the Russian Federation (23), Switzerland (5), Ukraine (2), the United Kingdom (16), Yemen (1)
Total: 203 collections including 229 occurrences