Kingdom Animalia (animals) Eumetazoa (metazoans) Bilateria (bilaterally symmetrical animals) Protostomia (protostomes) Lophotrochozoa Trochozoa Mollusca (clams, snails, squids, and relatives) Class Bivalvia Order Arcoida Order Limoida Order Myoida Order Mytiloida Order Nuculoida Order Ostreoida Order Pholadomyoida Order Pterioida Order Solemyoida Order Unionoida Order Veneroida
