Rhynchonellata - Orthida - Productorthidae
Parent taxon: Orthoidea according to M. Liljeroth et al. 2017
See also Benedetto 2003 and Williams et al. 2000
Sister taxa: Anomalorthidae, Archaeorthidae, Bajanorthis, Bohemiellidae, Cathaysiorthidae, Glyptorthidae, Hesperonomiidae, Hesperorthidae, Lycophoriidae, Malinella, Nugnecella, Orthidae, Orthidiellidae, Ottadalenites, Plaesiomyidae, Poramborthidae, Skenidioidae, Tarfayidae, Turarella, Whittardiidae, Zhejiangorthis, Dolerorthidae, Dinorthidae
Subtaxa: Glossorthinae Productorthinae
Ecology: stationary epifaunal suspension feeder
Distribution:
• Dobrotivian of France (2 collections)
• Uhaku of Estonia (1), Latvia (1), Lithuania (1), Sweden (2)
• Aluoja of Estonia (1)
• Whiterockian of United States (1: California)
• Fennian of France (1)
• Volkhov of Estonia (45), Lithuania (1), the Russian Federation (53)
• Vaana of Estonia (1)
• Langevoja of Estonia (8), the Russian Federation (1)
• Valaste of Estonia (18), Haiti (1), the Russian Federation (1)
• Arenig of Canada (1: New Brunswick), Sweden (1), the United Kingdom (1)
• Klabava of the Czech Republic (2)
• 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 (58), France (3), Haiti (1), Iran (1), Ireland (9), Latvia (13), Lithuania (28), Myanmar (4), Norway (24), Portugal (2), the Russian Federation (56), Spain (3), Sweden (8), the United Kingdom (36), United States (2: Maine, Virginia)
Total: 440 collections including 486 occurrences