Bivalvia - Unionida - Unionidae
Synonyms: Cyprogeniinae Starobogatov 1970, Friersoniinae Starobogatov 1970, Medionidinae Starobogatov 1970, Megalonaiadinae Heard and Guckert 1970, Popenaiadinae Heard and Guckert 1970, Propterinae Hannibal 1912, Ptychobranchinae Starobogatov 1970
Parent taxon: Unionidae according to J. G. Carter et al. 2011
See also Bouchet et al. 2010
Sister taxa: Acuneopsis, Alasmidontinae, Anodonta, Coelatura, Coelaturinae, Comptio, Cuneopsis, Danlengiconcha, Elongaria, Eocuneopsis, Eolamprotula, Gonideinae, Jishuiconcha, Lamprotula, Liopotomida, Liovetulonaia, Luochengella, Modellnaiinae, Ningxiaconcha, Paranodonta, Parreysiinae, Periodunio, Plicatounio, Potomida, Proparreysia, Pseudelliptio, Psilounio, Qianweiella, Qiyangia, Qiyangiinae, Quadrula, Radioplicata, Rectidentinae, Rhabdotophorus, Shifangella, Shistodesmus, Solenaia, Tuberonaia, Undulatula, Unionelloides, Unioninae, Wulongiconcha, Yunnanoconcha
Subtaxa: Amblema Amblemini Cyprogenia Friersonia Lampsilini Medionidus Megalonaias Oxynaiini Pleurobemini Popenaias Proptera Ptychobranchus Quadrulini
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Quaternary of United States (1: Texas collection)
• Pliocene to Pleistocene of Italy (1)
• Miocene to Pliocene of Germany (1)
• Eocene of United States (1: Texas)
• Paleocene of Canada (5: Saskatchewan), United States (3: North Dakota, Utah)
• Cretaceous of Canada (6: Alberta, British Columbia), Mexico (2), Spain (1), United States (5: Arizona, Montana, Texas, Utah)
Total: 26 collections including 29 occurrences