[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 Ovulidae Fleming, 1822 - egg snails
         1 Genus Aperiovula Cate, 1973
         2 Genus Neosimnia Fischer, 1884
         3 Genus Pseudosimnia Schilder, 1927
         4 Genus Simnia Risso, 1826
         5 Genus Primovula Thiele, 1925
         6 Genus Pedicularia Swainson, 1840