Vetigastropoda Salvini-Plawen, 1980 - archaeogastropods s.l. Family Fissurellidae Fleming, 1822 - keyhole limpets Subfamily Emarginulinae Children, 1834 1.1 Genus Scutus Montfort, 1810 1.2 Genus Montfortula Iredale, 1915 2 Genus Emarginula Lamarck, 1801