†family Zygobolbidae Bassler 1923 (ostracod)
Ostracoda - Beyrichiacea - Zygobolbidae
Parent taxon: Beyrichiacea according to R. H. Benson et al. 1961
Sister taxa: Acronotellidae, Budnianella, Gillatia, Novakina, Pyxiprimitia, Uncertain
Subtaxa: Bonnemaia Glymmatobolbina Mastigobolbina Noviportia Plethobolbina Zygobolba Zygobolbinae
Ecology: epifaunal
Distribution:
• Silurian of Canada (18: Northwest Territories, Ontario, Quebec, Québec collections), Norway (1), Sweden (1), United States (98: Maryland, New York, Virginia, West Virginia)
• Ordovician of Canada (6: Northwest Territories), United States (1: Oklahoma)
Total: 125 collections including 321 occurrences