Phylum Mollusca Linnaeus, 1758 - molluscs Class Scaphopoda Bronn, 1862 - tusk shells Order Dentaliida Starobogatov, 1974 Family Dentaliidae Children, 1834 Genus Fissidentalium Fischer, 1885 1 Subgenus Compressidentalium Habe, 1963 see Genus Compressidentalium Habe, 1963