Bivalvia - Cardiidia

Parent taxon: Grammysioidea according to J. G. Carter et al. 2011

Sister taxon: Sanguinolitidae

Subtaxa: Asketomorpha, Cardiomorpha, Cercomyopsis, Cimitaria, Cuneamya, Cuneamyinae, Ectogrammysia, Fuchsella, Glossites, Grammysia, Grammysiinae, Grammysioidea, Prothyris, Sedgwickia, Solenomorpha

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Ecology: facultatively mobile infaunal suspension feeder