Nemathelminthes Gegenbaur, 1859 see Phylum Nematoda Gegenbaur, 1859 Class Nematoda Gegenbaur, 1859 Subclass Penetrantia Order Enoplida Filipjev, 1929 Suborder Tripylina Andrassy, 1974 Family Tripylidae De Man, 1876 Genus Paratripyla Brzeski, 1964