Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Superorder Archaeogastropoda Thiele, 1925
         Order Cocculiniformia Hazsprunar, 1987 see Superorder Cocculiniformia Haszprunar, 1987
           Superfamily Lepetelloidea Dall, 1882
             Family Pseudococculinidae Hickman, 1983
               Subfamily Caymanabyssiinae Marshall, 1986 see Family Caymanabyssiidae Marshall, 1986
                 1 Genus Caymanabyssia Moskalev, 1976
                 2 Genus Amphiplica Haszprunar, 1988
                 3 Genus Colotrachelus Marshall, 1986
                 4 Genus Copulabyssia Haszprunar, 1988
                 5 Genus Yaquinabyssia Haszprunar, 1988