[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 Naticidae Guilding, 1834 - moon snails
         Genus Euspira Agassiz, 1838
           Euspira catena (da Costa, 1778)
           Euspira fusca (de Blainville, 1825)
           Euspira grossularia (Marche-Marchad, 1957)
           Euspira guillemini (Payraudeau, 1826)
           Euspira macilenta (Philippi, 1844)
           Euspira montagui (Forbes, 1838)
           Euspira notabilis Jeffreys, 1885
           Euspira obtusa (Jeffreys, 1885)
           Euspira pallida (Broderip & G.B. Sowerby I, 1829) - pale northern moon snail
           Euspira phaeocephala (Dautzenberg & H. Fischer, 1896)
           Euspira presubplicata (Bouchet & Warén, 1993)
           Euspira pulchella (Risso, 1826)
           Euspira subplicata (Jeffreys, 1885)