TrapezidaeTrapezidae is a family in the order Venerida, containing 10 described species.Scientific classificationRankTaxonDomainEukaryotaKingdomAnimaliaPhylumMolluscaClassBivalviaOrderVeneridaFamilyTrapezidaeGeneraCoralliophaga3Trapezium3Neotrapezium2Fluviolanatus1Glossocardia1