Kingdom [Animalia] Linnaeus, 1758 - animals
Subkingdom Metazoa Haeckel, 1874
see Kingdom Animalia Linnaeus, 1758
Division Eumetazoa Butschli, 1910
see Subkingdom Eumetazoa Butschli, 1910
Subdivision Bilateralia
Phylum Platy-helminthes
see Phylum Platyhelminthes Gegenbaur, 1859
Class Gnathostomulida Riedl, 1969
see Phylum Gnathostomulida Ax, 1956
Genus Pterognathia Sterrer, 1966
1 Pterognathia grandis Kirsteuer, 1969
2 Pterognathia simplex Sterrer, 1966
see Haplognathia simplex (Sterrer, 1966)