Metazoa Haeckel 1874 - multicellular animals see Kingdom Animalia Linnaeus, 1758
   Bilateria Hatschek, 1888 - bilaterians see Subkingdom Bilateria Hatschek, 1888
     Phylum Acoelomorpha Ehlers, 1985 - acoelomorphs see Subphylum Acoelomorpha Ehlers, 1985
       Order Nemertodermatida Karling, 1940 - nemertodermatids
         1 Genus [Nemertinoides] Riser, 1987