Family Glycymerididae Newton 1922 (clam)
Alternative spelling: Glycymeridae
Parent taxon: Arcoidea according to J. G. Carter et al. 2011
Sister taxa: Arcidae, Catamarcaiidae, Cucullaeidae, Frejidae, Noetiidae, Parallelodontidae
Subtaxa: Arcullaeinae, Glycymeridinae, Glycymeris, Melaxinaeinae, Tucetona
Ecology: facultatively mobile semi-infaunal suspension feeder