Phylum [Mollusca] Linnaeus, 1758 - molluscs Class Bivalvia Linnaeus, 1758 - bivalves Order Mytiloida Férussac, 1822 see Order Mytilida Férussac, 1822 Superfamily Pinnacea Leach, 1819, nom. illeg. see Superfamily Pinnoidea Leach, 1819 Family Pinnidae Leach, 1819 - pen clams Genus Pinna Linnaeus, 1758