 Natura - nature | | Mundus Plinius - physical world | | Naturalia | | Biota | | Domain Eukaryota - eukaryotes | | Kingdom Animalia C. Linnaeus, 1758 - animals | | Subkingdom Bilateria (Hatschek, 1888) Cavalier-Smith, 1983 - bilaterians | | Branch Protostomia Grobben, 1908 - protostomes | | Infrakingdom
"Lophotrochozoa"
- lophotrochozoans | | Superphylum Eutrochozoa | | Phylum Mollusca (Linnaeus, 1758) Cuvier, 1795 - molluscs |  Class Gastropoda Cuvier, 1795 - snails and slugs |  ?Superfamily †Euomphaloidea White, 1877 | | ?Superfamily †Macluritoidea Carpenter, 1861 |  Family †Anomphalidae Wenz, 1938 | | Superfamily †Clisospiroidea S.A. Miller, 1889 | | Family †Codonocheilidae S.A. Miller, 1889 | | Family †Crassimarginatidae Frýda et al., 2002 | | Family †Holopeidae Cossmann, 1908 | | Family †Isospiridae Wangberg-Eriksson, 1964 | | Superfamily †Loxonematoidea Koken, 1889 | | Superfamily †Ophiletoidea Koken, 1907 | | Family †Opisthonematidae Yu, 1976, nom. inval. | | Family †Paraturbinidae Cossmann, 1916 | | Family †Planitrochidae Knight, 1956 | | Family †Pragoserpulinidae Frýda, 1998 | | Family †Pseudophoridae S.A. Miller, 1889 | | Family †Raphistomatidae Koken, 1896 | | Family †Rhytidopilidae Starobogatov, 1976 | | Family †Scoliostomatidae Frýda et al., 2002 | | Family †Sinuopeidae Wenz, 1938 | | Superfamily †Straparollinoidea P.J. Wagner, 2002 | | Superfamily †Trochonematoidea Zittel, 1895 | | Subclass Eogastropoda Ponder & Lindberg, 1996 | | Subclass Orthogastropoda Ponder & Lindberg, 1996 |
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