Lingulata - Acrotretida - Torynelasmatidae
Parent taxon: Acrotretoidea according to J. Hansen and L. E. Holmer 2011
See also Popov 2000 and Williams et al. 2000
Sister taxa: Acrothyra, Acrotretidae, Ceratretidae, Craniotreta, Curticiidae, Eoconulidae, Ephippelasmatidae, Hadrotreta, Scaphelasmatidae, Schizotretoides, Acrotetidae
Subtaxa: Acrotretella Cristicoma Issedonia Mylloconotreta Naimania Paratreta Polylasma Torynelasma
Ecology: stationary epifaunal suspension feeder
Distribution:
• Silurian of Australia (4 collections), United States (3: Oklahoma)
• Uhaku of Sweden (1)
• Chazyan of United States (1: Alabama)
• Ordovician of Ireland (1), Kazakhstan (2), Norway (1), Sweden (6)
• Cressagian of the United Kingdom (1)
Total: 20 collections including 21 occurrences