Phylum Mollusca Linnaeus, 1758 - molluscs
Conchifera Gegenbaur, 1878
see Subphylum Conchifera Gegenbauer, 1878
Cyrtosoma
Class Gastropoda Cuvier, 1795 - snails and slugs
Subclass †Archaeobranchia Parkhaev, 2001
Order †Helcionelliformes Golikov & Starobogatov, 1975
Superfamily †Yohelcionelloidea nom. null.
see Superfamily Yochelcionelloidea Runnegar & Jell, 1976
Family †Yochelcionellidae Runnegar & Jell, 1976
1 ?Genus †Enigmaconus MacKinnon, 1985
2 Genus †Eotebenna Runnegar & Jell, 1976
3 Genus †Runnegarella Parkhaev, 2002
4 Genus †Yochelcionella Runnegar & Pojeta, 1974