Alternative spelling: Wellerielloidea
Parent taxon: Beyrichicopina according to L. M. Melnikova 2019
See also Abushik 2015
Sister taxa: Beyrichioidea, Bolliacea, Craspedobolbinoidea, Hollinoidea, Indivisiacea, Kirkbyoidea, Kloedenioidea, Longisculacea, Oepikelloidea, Treposelloidea, Youngielloidea, Zygobolboidea
Subtaxa: Glanditiidae Leperditellidae Welleriellidae
Type: Welleriella
Ecology: epifaunal suspension feeder
Distribution:
• Carboniferous of China (1 collection), United States (2: Kansas)
• Devonian of France (2), Morocco (2), Ukraine (1), United States (1: Illinois)
• Silurian to Devonian of United States (1: Oklahoma)
• Silurian of Australia (1), the Russian Federation (1)
• Uhaku of the Russian Federation (4)
• Chazyan of Canada (18: Northwest Territories, Quebec)
• Whiterockian of Canada (9: Northwest Territories), United States (23: Nevada)
• Arenig of Bolivia (1), China (1), the Russian Federation (1)
• Ordovician of Canada (25: Northwest Territories, Nunavut, Ontario, Quebec), China (9), Czechia (1), the Russian Federation (31), United States (59: Alaska, Iowa, Kentucky, Minnesota, Nevada, Oklahoma, Tennessee, Virginia, Wisconsin)
• Ibexian of United States (1: Nevada)
Total: 195 collections including 261 occurrences