Rhynchonellata - Orthida - Productorthidae
Parent taxon: Productorthidae according to M. Liljeroth et al. 2017
See also Mitchell 1977, Neuman 1964, Owen and Harper 1982, Rubel 1961, Williams et al. 2000 and Wright 1964
Sister taxon: Glossorthinae
Subtaxa: Ferrax Nicolella Panderina Productorthis Saucrorthis
Ecology: stationary epifaunal suspension feeder
Distribution:
• Uhaku of Latvia (1 collection), Lithuania (1), Sweden (2)
• Dobrotivian of France (2)
• Aluoja of Estonia (1)
• Whiterockian of United States (1: California)
• Valaste of Estonia (19), the Russian Federation (1)
• Langevoja of Estonia (8), the Russian Federation (1)
• Vaana of Estonia (1)
• Billingen of Estonia (11), the Russian Federation (21), Sweden (1)
• Arenig of Canada (1: New Brunswick), Sweden (1), the United Kingdom (1)
• Klabava of Czechia (1)
• Arenigian of Argentina (6), the Russian Federation (1), United States (1: Maine)
• Ordovician of Argentina (2), Belarus (2), Belgium (5), Canada (3: Newfoundland), China (28), Estonia (82), France (3), Iran (1), Ireland (9), Latvia (13), Lithuania (29), Myanmar (4), Norway (24), Portugal (2), the Russian Federation (84), Spain (3), Sweden (7), the United Kingdom (36), United States (2: Maine, Virginia)
Total: 422 collections including 454 occurrences