Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Scaphopoda Bronn, 1862 - tusk shells
     Order Gadilida Starobogatov, 1974
       Family Pulsellidae Boss, 1982
         1 Subgenus Fissipulsellum Palmer, 1986, nom. nud.
         2 Genus Annulipulsellum Scarabino, 1986
         3 Genus Striopulsellum Scarabino, 1995
         4 Genus Compressidens Pilsbry & Sharp, 1897