Family Psammobiidae Fleming 1828 (clam)
Parent taxon: Tellinoidea according to J. G. Carter et al. 2011
Sister taxa: Donacidae, Icanotiidae, Quenstedtiidae, Semelidae, Solecurtidae, Sowerbyidae, Tancrediidae, Tellinidae, Unicardiopsidae
Subtaxa: Gari, Heterodonax, Nuttallia, Psammobiinae, Sanguinolariinae
Ecology: facultatively mobile infaunal deposit feeder