Bivalvia - Ostreida - Placunopsidae
Parent taxon: Ostreoida according to S. E. Damborenea 2002
See also Bouchet et al. 2010
Sister taxa: Malleidina, Myodakryotidae, Ostreidina, Ostreoidea, Palaeolophidae, Pectinina, Pinnoidea, Pterioidea
Subtaxa: Placunopsis
Ecology: stationary epifaunal suspension feeder
Distribution:
• Paleocene of United States (1: Alaska collection)
• Cretaceous of Argentina (10), Chile (1), Denmark (3), Germany (2), Greenland (1), Italy (1), Japan (10), Poland (6), Slovakia (2), the United Kingdom (4)
• Temaikan of New Zealand (1)
• Jurassic of Afghanistan (1), Antarctica (1), Argentina (8), Bulgaria (1), Canada (2: British Columbia), Chile (4), China (5), France (24), Germany (4), Greenland (28), Hungary (3), India (20), Italy (1), Kenya (2), Mexico (1), New Zealand (3), Poland (1), Portugal (23), Romania (2), Saudi Arabia (1), Somalia (1), Spain (12), Tanzania (2), Türkiye (2), the United Kingdom (53), United States (1: Montana)
• Triassic of Austria (4), Bosnia and Herzegovina (2), Bulgaria (1), Canada (1: British Columbia), China (16), Egypt (1), France (2), Germany (21), Hungary (5), Indonesia (8), Israel (2), Italy (6), Japan (1), Jordan (2), Peru (1), Poland (1), Spain (26), Svalbard and Jan Mayen (1), United States (6: Alaska, Nevada), Vietnam (1)
Total: 356 collections including 373 occurrences