Rhynchonellata - Orthida - Anomalorthidae
Parent taxon: Orthoidea according to J. Hansen and L. E. Holmer 2011
See also Williams et al. 2000
Sister taxa: Archaeorthidae, Bajanorthis, Bohemiellidae, Cathaysiorthidae, Glyptorthidae, Hesperonomiidae, Hesperorthidae, Lycophoriidae, Malinella, Nugnecella, Orthidae, Orthidiellidae, Ottadalenites, Plaesiomyidae, Poramborthidae, Productorthidae, Skenidioidae, Tarfayidae, Turarella, Whittardiidae, Zhejiangorthis, Dolerorthidae, Dinorthidae
Subtaxa: Alimbella Anomalorthis Astraborthis Medessia
Ecology: stationary epifaunal suspension feeder
Distribution:
• Whiterockian of United States (61: California, Nevada, Oklahoma, Utah collections)
• Chazyan of United States (1: Utah)
• Fennian of United States (2: Nevada)
• Arenig of China (1), the United Kingdom (2)
• Arenigian of Canada (1: Northwest Territories)
• Ordovician of Kazakhstan (3), Norway (3), United States (33: California, Idaho, Nevada, Utah)
• Tremadoc of Argentina (1)
• Ibexian of United States (6: Nevada)
Total: 114 collections including 134 occurrences