[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 Trochidae Rafinesque, 1815 - top snails
         Genus Calliostoma Swainson, 1840
           Calliostoma caroli (Dautzenberg, 1927)
           Calliostoma cleopatra (Locard, 1896)
           Calliostoma conulus (C. Linnaeus, 1758)
           Calliostoma granulatum (Born, 1778) - European granular top-shell
           Calliostoma grimaldii (Dautzenberg & H. Fischer, 1896)
           Calliostoma gualterianum (Philippi, 1848) - Gualteri's top-shell
           Calliostoma gubbiolii Nofroni, 1984
           Calliostoma hirondellei (Dautzenberg & H. Fischer, 1896)
           Calliostoma kochi Pallary, 1902
           Calliostoma laugieri (Payraudeau, 1826)
           Calliostoma leptophyma (Dautzenberg & H. Fischer, 1896)
           Calliostoma lithocolletum (Dautzenberg, 1925)
           Calliostoma milneedwardsi (Locard, 1898)
           Calliostoma normani (Dautzenberg & H. Fischer, 1897)
           Calliostoma obesulum (Locard, 1898)
           Calliostoma occidentale (Mighels & C.B. Adams, 1842) - boreal topsnail
           Calliostoma virescens Coen, 1933
           Calliostoma zizyphinum (C. Linnaeus, 1758)