[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Mollusca Linnaeus, 1758 - molluscs
     Class Gastropoda Cuvier, 1795 - snails and slugs
       Family Cylichnidae Adams & Adams, 1854
         1 Genus Cylichna Lovén, 1846
         2 Genus Acteocina Gray, 1847
         3 Genus Roxania Gray, 1847
         4 Genus Scaphander Montfort, 1810
         5 Genus Meloscaphander Schepman, 1913
         6 Genus Mamillocylichna Nordsieck, 1972
         7 Genus Utriculopsis Sars, 1870