†family Zygobolbidae Bassler 1923 (ostracod)
Ostracoda - Palaeocopida - Zygobolbidae
Parent taxon: Beyrichicopida according to A. F. Abushik and I. O. Evdokimova 2016
See also Benson et al. 1961
Sister taxa: Aparchitellinidae, Binodicopina, Hexophthalmoididae, Palaeocopina, Paraparchitocopina
Subtaxa: Bonnemaia Glymmatobolbina Mastigobolbina Noviportia Plethobolbina Zygobolba Zygobolbinae
Ecology: epifaunal suspension feeder
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 319 occurrences