Mollusca Linnaeus, 1758 - molluscs see Phylum Mollusca Linnaeus, 1758
   Gastropoda Cuvier, 1795 see Class Gastropoda Cuvier, 1795
     Clade Neritimorpha Koken, 1896 see Order Neritimorpha Golikov & Starobogatov, 1975
       Clade †Cyrtoneritimorpha Frýda, 1998
         Family †Vltaviellidae Bandel & Frýda, 1999
           1 Subfamily †Vltaviellinae Bandel & Frýda, 1999
           2 Subfamily †Krameriellinae Frýda & Heidelberger, 2003