Parvicardium trapeziumParvicardium trapezium is a species in the genus Parvicardium, family Cardiidae, order Cardiida.Scientific classificationRankTaxonDomainEukaryotaKingdomAnimaliaPhylumMolluscaClassBivalviaOrderCardiidaFamilyCardiidaeGenusParvicardiumSpeciesParvicardium trapezium