Phylum Mollusca Linnaeus, 1758 - molluscs Conchifera Gegenbaur, 1878 see Subphylum Conchifera Gegenbauer, 1878 Class Scaphopoda Bronn, 1862 - tusk shells Order Dentaliida Starobogatov, 1974 Family Laevidentaliidae Palmer, 1974 Genus †Pipadentalium Yoo, 1988