Phylum [Mollusca] Linnaeus, 1758 - molluscs Class Bivalvia Linnaeus, 1758 - bivalves Order Mytiloida Férussac, 1822 see Order Mytilida Férussac, 1822 Superfamily Pectinacea Rafinesque, 1815, nom. illeg. see Superfamily Pectinoidea Rafinesque, 1815 1 Family Spondylidae Gray, 1826 - thorny oysters 2 Family Pectinidae Rafinesque, 1815 - scallops