Bivalvia - Unionida

Parent taxon: Unionoida according to J. J. Sepkoski 2002

Sister taxa: Actinodontophora, Actinodontophoroidea, Archanodontacea, Carydioidea, Cycloconchoidea, Etherioidea, Hyriidina, Nakamuranaia, Pachycardia, Pachycardiidae, Protelliptio, Silesunionidina, Undulatula, Unionidina

Subtaxa: none

Ecology: facultatively mobile infaunal suspension feeder