Mollusca Linnaeus, 1758 - molluscs see Phylum Mollusca Linnaeus, 1758
   01 Family †Khairkhaniidae Missarzhevsky, 1989, incertae sedis
   02 Family †Ladamarekiidae Frýda, 1998, incertae sedis
   03 Family †Metoptomatidae Wenz, 1938, incertae sedis
   04 Family †Patelliconidae Frýda, 1998, incertae sedis
   05 Family †Protoconchoididae Geyer, 1994, incertae sedis
   06 Superfamily †Archinacelloidea Knight, 1952, incertae sedis
   07 Superfamily †Pelagielloidea Knight, 1956, incertae sedis see Order Pelagielliformes Runnegar & Pojeta, 1985
   08 Superfamily †Scenelloidea Miller, 1889, incertae sedis
   09 Superfamily †Yochelcionelloidea Runnegar & Jell, 1976, incertae sedis
   10 Superfamily †Bellerophontoidea McCoy, 1852, incertae sedis
   11 Gastropoda Cuvier, 1795 see Class Gastropoda Cuvier, 1795