Clade Ostreomorphi Ferussac 1822 (clam)
Parent taxon: Pteriomorphia according to J. G. Carter et al. 2011
Sister taxa: Mytilomorphi, Prionodonta, Pterioida
Subtaxa: Arcioni Ischyrodontidae Matheriidae Ostreioni
Ecology: facultatively mobile epifaunal suspension feeder