Parent taxon: Pelecypoda according to P. E. Raymond 1916
See also Arnold 1906, Glenn 1904, Olsson 1931, Popenoe 1937 and Rivera 1957
Sister taxa: Acturellina, Amosius, Amphikoilinae, Arhouriellidae, Asiphonidae, Asthenodonta, Aviculomya, Bakewellia, Bathyspinulinae, Bleta, Bodmania, Burriera, Carnidia, Cirravidae, Claughtonia, Conchodus, Cruciella, Cryptodonta, Ctenolima, Delia, Edon, Elliptoidea, Ensia, Eubivalvia, Euburnopecten, Euprotobranchia, Fogiella, Geinitzia, Gibboconcha, Gosselettia, Guebhardia, Hemisterias, Isofilibranchia, Laubeia, Laurskiidae, Libyaconchus, Lux, Manankovia, Megagrypha, Modiolopsis praerupta, Neotaxodonta, Onkogrypha, Ostrea compta, Ostreavicula, Palaeoentolium, Palaeostrea, Paradoxia, Paraviculidae, Phyllonia, Pleureterites, Praecardiomya, Praelamellodontidae, Praevicula, Productae, Psammoconcha, Pteriomorpha, Ptychoplasma, Rebusum, Reniella, Rostrotortus, Septocardiidae, Solen (Solecurtus) ellipticus, Solen (Solecurtus) planulatus, Spirodomidae, Stagnestesta, Taeniodon, Tatella, Telistrophis, Trachidomia, Praeanomalodontata, Fusidae, Gariidae, Plicatulacea, Teleodesmacea, Corbidae, Solenomyidae, Aviculidae, Eoasmussia, Phaenomya, Anomalodesmacea
Subtaxa: Ambonychidae Schizodonta Taxodonta
Ecology: facultatively mobile infaunal suspension feeder