Strophomenata - Strophomenida - Christianiidae
Parent taxon: Plectambonitoidea according to C. R. Congreve et al. 2015
See also Cocks 2005, Cocks 2010, Mitchell 1977, Popov et al. 2000, Williams et al. 2000 and Zhan and Jin 2005
Sister taxa: Aegiromenidae, Allwynellidae, Alwynellidae, Bimuriidae, Grorudiidae, Hesperomenidae, Leptellinidae, Leptestiidae, Paucicostella, Plectambonitidae, Sowerbyellidae, Strophodontidae, Syndielasmatidae, Taffiidae, Tafflidae, Xenambonitidae, Anoptambonitidae
Subtaxa: Christiania Nubialba
Ecology: stationary epifaunal suspension feeder
Distribution:
• Silurian of Kazakhstan (1 collection)
• Uhaku of Sweden (4)
• Chazyan of United States (3: Alabama, Tennessee)
• Ordovician of Australia (3), Belgium (8), Canada (6: British Columbia, Newfoundland, Quebec), China (24), Estonia (3), Iran (1), Italy (4), Kazakhstan (37), Mongolia (1), Norway (16), the Russian Federation (3), Sweden (16), the United Kingdom (38), United States (22: Alaska, Maine, New York, Virginia)
Total: 190 collections including 194 occurrences