Phylum Mollusca Linnaeus, 1758 - molluscs Class Scaphopoda Bronn, 1862 - tusk shells Order Dentaliida Starobogatov, 1974 1 Family Dentaliidae Children, 1834 2 Family Laevidentaliidae Palmer, 1974 3 Family Gadilinidae Chistikov, 1975 4 Family Omniglyptidae Chistikov, 1975 [monotypic] 5 Family Fustiariidae Steiner, 1991 [monotypic]