Ostracoda - Palaeocopida - Euprimitiidae
Parent taxon: Hollinacea according to M. Mohibullah et al. 2013
Sister taxa: Chilobolbinidae, Egorovellidae, Euprimitidae, Hithidae, Nanopsis, Oepikiumidae, Tetradellidae, Tvaerenellidae
Subtaxa: Euprimitiinae
Ecology: epifaunal suspension feeder
Distribution:
• Permian of Italy (1 collection)
• Silurian of the Czech Republic (2), Norway (2)
• Dobrotivian of France (1)
• Chazyan of Canada (3: Northwest Territories)
• Arenig of China (1)
• Ordovician of Argentina (1), Canada (12: Northwest Territories, Nunavut, Ontario, Quebec), China (13), Norway (1), Portugal (1), the Russian Federation (8), Sweden (15), the United Kingdom (1), United States (42: British Columbia, Iowa, Kentucky, Michigan, Minnesota, New York, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia)
• Tremadoc of China (1)
Total: 105 collections including 198 occurrences