Gastropoda Cuvier, 1795 see Class Gastropoda Cuvier, 1795 Sacoglossa Ihering, 1876 see Order Sacoglossa Ihering, 1876 Limapontioidea Gray, 1847 Family Limapontiidae Gray, 1847 Genus Placida Trinchese, 1876 Placida verticilata Ortea, 1981