Phylum [Mollusca] Linnaeus, 1758 - molluscs Class Bivalvia Linnaeus, 1758 - bivalves Order Arcoida see Order Pteriomorpha Beurlen, 1944 Superfamily Arcacea see Superfamily Arcoidea Lamarck, 1809 Family Arcidae Lamarck, 1809 - arks Subfamily Arcinae Lamarck, 1809 Genus Bentharca Verrill & Bush, 1898