Pegophysema bialataPegophysema bialata is a species in the genus Pegophysema, family Lucinidae, order Lucinida.Scientific classificationRankTaxonDomainEukaryotaKingdomAnimaliaPhylumMolluscaClassBivalviaOrderLucinidaFamilyLucinidaeGenusPegophysemaSpeciesPegophysema bialata