[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 Diodora Gray, 1821
           Diodora dorsata (Monterosato, 1878)
           Diodora gibberula (Lamarck, 1822)
           Diodora graeca (C. Linnaeus, 1758) - Graecian keyhole limpet
           Diodora italica (Defrance, 1820) - Italian keyhole limpet
           Diodora producta (Monterosato, 1880)
           Diodora ruppellii (G.B. Sowerby I, 1835)