[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 Fissurellidae Fleming, 1822 - keyhole limpets
         Genus Emarginula Lamarck, 1801
           Emarginula adriatica O.G. Costa, 1829
           Emarginula christiaensi Piani, 1985
           Emarginula crassa Sowerby, 1813 - crass emarginula
           Emarginula divae (van Aartsen & Carrozza, 1995)
           Emarginula fissura (Linnaeus, 1758)
           Emarginula huzardii (Payraudeau, 1826)
           Emarginula multistriata Jeffreys, 1882
           Emarginula octaviana Coen, 1939
           Emarginula punctulum Piani, 1980
           Emarginula pustula Thiele, in Küster, 1913
           Emarginula rosea T. Bell, 1824
           Emarginula sicula J.E. Gray, 1825 - dagger emarginula
           Emarginula solidula O.G. Costa, 1829
           Emarginula tenera Locard, 1892
           Emarginula tuberculosa Libassi, 1859 - tuberculate emarginula