Phylum Mollusca Linnaeus, 1758 - molluscs Class Bivalvia Linnaeus, 1758 - bivalves Subclass Pteriomorphia Beurlen, 1944 see Superorder Pteriomorphia Beurlen, 1944 Order Limida Moore, 1952 [monotypic] Superfamily Limoidea Rafinesque, 1815 [monotypic] Family Limidae Rafinesque, 1815 - file clams Genus Limatula Wood, 1839 Subgenus Limatula Wood, 1839