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, Toxorthidae, Dolerorthidae, Dinorthidae
Subtaxa: Glossorthinae Productorthinae
Ecology: stationary epifaunal suspension feeder
Distribution:
• Uhaku of Estonia (1 collection), Latvia (1), Lithuania (1), Sweden (2)
• Dobrotivian of France (2)
• Aluoja of Estonia (1)
• Whiterockian of United States (1: California)
• Vaana of Estonia (1)
• Langevoja of Estonia (8), the Russian Federation (1)
• Valaste of Estonia (19), the Russian Federation (1)
• Billingen of Estonia (12), the Russian Federation (21), Sweden (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)
• Klabava of Czechia (2)
• Ordovician of Argentina (2), Belarus (2), Belgium (5), Canada (3: Newfoundland), China (29), Estonia (93), France (4), Iran (1), Ireland (9), Latvia (13), Lithuania (29), Myanmar (4), Norway (24), Peru (2), Portugal (5), the Russian Federation (92), Spain (3), Sweden (7), Ukraine (2), the United Kingdom (36), United States (2: Maine, Virginia)
Total: 453 collections including 500 occurrences