Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Divasibranchia Minichev & Starobogatov, 1975
       Order Stylommatophora Schmidt, 1855 see Infraorder Stylommatophora Schmidt, 1855
         (Helicid Sigmurethra)
           Superfamily Helicoidea Rafinesque, 1815
             Family Helminthoglyptidae Pilsbry, 1939
               Subfamily Helminthoglyptinae Pilsbry, 1939
                 Genus Helminthoglypta Ancey, 1887
                   Subgenus Coyote Reeder & Roth, 1988