Parent taxon: Lamellibranchiata according to W. Hind 1904
Sister taxa: Acanomyophoria, Acturellina, Afghanodesma, Amosius, Ampezzania, Amphikoilinae, Arhouriellidae, Asiphonidae, Asthenodonta, Aviculomya, Bakewellia, Bathyspinulinae, Bleta, Bodmania, Burriera, Carnidia, Cirravidae, Claughtonia, Conchodus, Cruciella, Cryptodonta, Ctenolima, Delia, Dissonia, Edon, Elliptoidea, Ensia, Eubivalvia, Euburnopecten, Euprotobranchia, Fogiella, Geinitzia, Gibboconcha, Gosselettia, Guebhardia, Hemisterias, Isofilibranchia, Laurskiidae, Libyaconchus, Lux, Manankovia, Megagrypha, Modiolopsis praerupta, Nanogyra (Palaeogyra), Neotaxodonta, Onkogrypha, Ostrea compta, Ostreavicula, Palaeostrea, Paradoxia, Paraviculidae, Paullia, Phyllonia, Pleureterites, Praecardiomya, Praevicula, Productae, Psammoconcha, Pteriomorpha, Ptychoplasma, Rebusum, Reniella, Rostrotortus, Septocardiidae, Solen (Solecurtus) ellipticus, Solen (Solecurtus) planulatus, Sollea, Spirodomidae, Stagnestesta, Taeniodon, Tatella, Telistrophis, Trachidomia, Teleodesmacea, Corbidae, Gariidae, Plicatulacea, Solenomyidae, Anomalodesmacea, Phaenomya, Aviculidae, Prionodesmacea, Eoasmussia, Lyra, Praeanomalodontata, Fusidae
Subtaxa: Nothamusium
Ecology: facultatively mobile infaunal suspension feeder
Distribution: found only at Narrowdale (Carboniferous of the United Kingdom)