[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 Epitoniidae Berry, 1910 (1812) - wentletraps
         01 Genus Epitonium Röding, 1798
         02 Genus Cycloscala Dall, 1889
         03 Genus Acirsa Mörch, 1857
         04 Genus Acrilloscala Sacco, 1891
         05 Genus Alora Adams & Adams, 1861
         06 Genus Cirsotrema Mörch, 1852
         07 Genus Claviscala Boury, 1909
         08 Genus Cylindriscala Boury, 1909
         09 Genus Gregorioiscala Cossmann, 1912
         10 Genus Gyroscala Boury, 1887
         11 Genus Opalia Adams & Adams, 1853
         12 Genus Periapta Bouchet & Warén, 1986
         13 Genus Punctiscala Boury, 1889
         14 Genus Eccliseogyra Dall, 1892
         15 Genus Iphitus Jeffreys, 1883
         16 Genus Narrimania Taviani, 1984
         17 Genus Opaliopsis Thiele, 1928
         18 Genus Papuliscala Boury, 1911