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:
• Dobrotivian of France (2 collections)
• Uhaku of Latvia (1), Lithuania (1), Sweden (2)
• Aluoja of Estonia (1)
• Whiterockian of United States (1: California)
• Volkhov of Estonia (37), Lithuania (1), the Russian Federation (51)
• Langevoja of Estonia (8), the Russian Federation (1)
• Vaana of Estonia (1)
• Valaste of Estonia (18), Haiti (1), the Russian Federation (1)
• Klabava of the Czech Republic (1)
• Arenig of Canada (1: New Brunswick), Sweden (1), the United Kingdom (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 (54), France (3), Haiti (1), Iran (1), Ireland (9), Latvia (13), Lithuania (28), Myanmar (4), Norway (24), Portugal (2), the Russian Federation (50), Spain (3), Sweden (8), the United Kingdom (36), United States (2: Maine, Virginia)
Total: 417 collections including 448 occurrences