Acanthonchus Cobb, 1920 (basis of record)
Actinonema Cobb, 1920 (basis of record)
Amphimonhystera Allgén, 1929 (basis of record)
Anoplostoma Bütschli, 1874 (basis of record)
Anoplostomatidae Gerlach & Riemann, 1974 (basis of record)
Anoplostomatinae (basis of record)
Anticomidae Filipjev, 1918 (basis of record)
Anticyclus Cobb, 1920 (basis of record)
Antomicron Cobb, 1920 (basis of record)
Aponchiidae Gerlach, 1963 (basis of record)
Aponema Jensen, 1978 (basis of record)
Axonolaimidae Filipjev, 1918 (basis of record)
Axonolaimoidea Filipjev, 1918 (basis of record)
Axonolaimus de Man, 1889 (basis of record)
Bathylaimus Cobb, 1894 (basis of record)
Belbolla Andrássy, 1973 (basis of record)
Ceramonematidae Cobb, 1933 (basis of record)
Cervonema Wieser, 1954 (basis of record)
Chromadora Bastian, 1865 (basis of record)
Chromadorella Filipjev, 1918 (basis of record)
Chromadoria (basis of record)
Chromadorida (basis of record)
Chromadoridae Filipjev, 1917 (basis of record)
Chromadorina (basis of record)
Chromadorinae Filipjev, 1917 (basis of record)
Chromadoroidea Filipjev, 1917 (basis of record)
Comesomatidae Filipjev, 1918 (basis of record)
Comesomatinae Filipjev, 1918 (basis of record)
Cyatholaimidae Filipjev, 1918 (basis of record)
Cyatholaiminae Filipjev, 1918 (basis of record)
Daptonema Cobb, 1920 (basis of record)
Desmodora de Man, 1889 (basis of record)
Desmodoridae Filipjev, 1922 (basis of record)
Desmodorinae Filipjev, 1922 (basis of record)
Desmodoroidea Filipjev, 1922 (basis of record)
Desmolaiminae Schneider, 1926 (basis of record)
Desmoscolecidae Shipley, 1896 (basis of record)
Desmoscolecina (basis of record)
Desmoscolecinae (basis of record)
Desmoscolecoidea Shipley, 1896 (basis of record)
Desmoscolex Claparède, 1863 (basis of record)
Diplopeltidae Filipjev, 1918 (basis of record)
Diplopeltinae Filipjev, 1918 (basis of record)
Dorylaimopsinae De Coninck, 1965 (basis of record)
Dorylaimopsis Ditlevsen, 1918 (basis of record)
Eleutherolaiminae Filipjev, 1922 (basis of record)
Eleutherolaimus Filipjev, 1922 (basis of record)
Elzalia Gerlach, 1957 (basis of record)
Enchelidiidae Filipjev, 1918 (basis of record)
Enoplia (basis of record)
Enoplida (basis of record)
Enoplidae Dujardin, 1845 (basis of record)
Enoplina (basis of record)
Enoploidea Dujardin, 1845 (basis of record)
Enoploides Ssaweljev, 1912 (basis of record)
Enoplolaiminae De Coninck, 1965 (basis of record)
Enoplus Dujardin, 1845 (basis of record)
Euchromadorinae Gerlach & Riemann, 1973 (basis of record)
Eurystomina Filipjev, 1921 (basis of record)
Gammarinema Kinne & Gerlach, 1953 (additional source)
Graphonema Cobb, 1898 (basis of record)
Halalaiminae De Coninck, 1965 (basis of record)
Halalaimus de Man, 1888 (basis of record)
Halanonchinae Wieser & Hopper, 1967 (basis of record)
Halichoanolaimus de Man, 1886 (basis of record)
Hopperia Vitiello, 1969 (basis of record)
Hypodontolaiminae De Coninck, 1965 (basis of record)
Ironidae de Man, 1876 (basis of record)
Ironoidea de Man, 1876 (basis of record)
Laimella Cobb, 1920 (basis of record)
Leptolaimidae Örley, 1880 (basis of record)
Leptolaiminae Örley, 1880 (basis of record)
Leptolaimoides Vitiello, 1971 (basis of record)
Leptolaimus de Man, 1876 (basis of record)
Leptosomatidae Filipjev, 1916 (basis of record)
Linhomoeidae Filipjev, 1922 (basis of record)
Linhomoeinae Filipjev, 1922 (basis of record)
Marilynia Hopper, 1972 accepted as Marylynnia (Hopper, 1972) Hopper, 1977 (basis of record)
Metachromadora Filipjev, 1918 (basis of record)
Metadasynemella De Coninck, 1942 (basis of record)
Metalinhomoeus de Man, 1907 (basis of record)
Metoncholaimus Filipjev, 1918 (basis of record)
Microlaimidae Micoletzky, 1922 (basis of record)
Microlaimoidea Micoletzky, 1922 (basis of record)
Molgolaiminae Jensen, 1978 (basis of record)
Monhystera Bastian, 1865 (basis of record)
Monhysterida (basis of record)
Monhysteridae de Man, 1876 (basis of record)
Monhysteroidea Filipjev, 1929 (basis of record)
Monoposthia de Man, 1889 (basis of record)
Monoposthiidae Filipjev, 1934 (basis of record)
Nemanema Cobb, 1920 (basis of record)
Odontophora Bütschli, 1874 (basis of record)
Oncholaimidae Filipjev, 1916 (basis of record)
Oncholaiminae Filipjev, 1916 (basis of record)
Oncholaimoidea Filipjev, 1916 (basis of record)
Oncholaimus Dujardin, 1845 (basis of record)
Oxystomina Filipjev, 1918 (basis of record)
Oxystominidae Chitwood, 1935 (basis of record)
Oxystomininae Chitwood, 1935 (basis of record)