[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 Umbraculidae Dall, 1889 (1827)
         1 Genus Umbraculum Schumacher, 1817
         2 Genus Spiricella Rang, 1828