Ostracoda - Hollinocopida - Tetradellidae
Parent taxon: Tetradellidae according to G. Henningsmoen 1953
See also Henningsmoen 1953
Sister taxa: Bassleratiinae, Bellornatia, Fidelitella, Foramenella, Hippula, Kiesowia, Ogmoopsis, Perspicillinae, Piretellinae, Raymondatia, Reuentalina, Sigmoopsinae, Tetradella, Ushkarella, Vittella
Subtaxa: Ahla Ceratopsis Dilobella Polyceratella Tallinnella
Ecology: epifaunal
Distribution:
• Silurian of Australia (1 collection)
• Dobrotivian of France (1), Morocco (1)
• Uhaku of Sweden (4)
• Letna of the Czech Republic (1)
• Volkhov of Norway (2)
• Hunderum of Norway (4), the Russian Federation (1)
• Arenig of China (1)
• Ordovician of Canada (17: Northwest Territories, Nunavut, Quebec), the Czech Republic (7), Estonia (3), Latvia (3), Lithuania (2), Norway (2), Sweden (14), the United Kingdom (51), United States (30: Iowa, Kentucky, Minnesota, Ohio, Pennsylvania, Tennessee, Virginia)
Total: 145 collections including 171 occurrences