Phylum Mollusca Linnaeus, 1758 - molluscs Class Bivalvia Linnaeus, 1758 - bivalves Subclass Protobranchia Pelseneer, 1889 Order Nuculida Dall, 1889 Superfamily Nuculanoidea Adams & Adams, 1858 (1854) Family Siliculidae Allen & Sanders, 1973 1 Genus Silicula Jeffreys, 1879 2 Genus Lamellileda Cotton, 1930