Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Mollusca Linnaeus, 1758 - molluscs
     Subphylum Diasoma Runnegar & Pojeta Jr., 1974 see Phylum Mollusca Linnaeus, 1758
       Class †Rostroconchia Pojeta et al., 1972
         Genus †Anisotechnophorus Pojeta & Runnegar, 1976
         Genus †Pleuropegma Pojeta, Gilbert-Tomlinson & Shergold, 1977
         Genus †Wanwania Kobayashi, 1933
         1 Order †Ribeirioida Kobayashi, 1933
         2 Order †Conocardioida Neumayr, 1891