Adoncholaiminae Gerlach & Riemann, 1974 (basis of record)
Adoncholaimus Filipjev, 1918 (basis of record)
Aegialoalaimidae Lorenzen, 1981 (basis of record)
Anoplostoma Bütschli, 1874 (basis of record)
Anoplostomatidae Gerlach & Riemann, 1974 (basis of record)
Anoplostomatinae (basis of record)
Anticoma Bastian, 1865 (basis of record)
Anticomidae Filipjev, 1918 (basis of record)
Antomicron Cobb, 1920 (basis of record)
Araeolaimus de Man, 1888 (basis of record)
Atrochromadora Wieser, 1959 (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)
Calyptronema Marion, 1870 (basis of record)
Camacolaiminae Micoletzky, 1924 (basis of record)
Camacolaimus de Man, 1889 accepted as Deontolaimus de Man, 1880 (basis of record)
Chromadora Bastian, 1865 (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)
Chromadorita Filipjev, 1922 (basis of record)
Chromadoroidea Filipjev, 1917 (basis of record)
Chromaspirina Filipjev, 1918 (basis of record)
Comesomatidae Filipjev, 1918 (basis of record)
Comesomatinae Filipjev, 1918 (basis of record)
Crenopharynginae Platonova, 1976 (basis of record)
Cyartonema Cobb, 1920 (basis of record)
Cyatholaimidae Filipjev, 1918 (basis of record)
Cyatholaiminae Filipjev, 1918 (basis of record)
Cyatholaimus Bastian, 1865 (basis of record)
Daptonema Cobb, 1920 (basis of record)
Deontolaimus de Man, 1880 (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)
Dichromadora Kreis, 1929 (basis of record)
Diplolaimella Allgén, 1929 (basis of record)
Diplopeltidae Filipjev, 1918 (basis of record)
Diplopeltinae Filipjev, 1918 (basis of record)
Diplopeltoides Gerlach, 1962 (basis of record)
Diplopeltula Gerlach, 1950 (basis of record)
Dorylaimida (basis of record)
Dorylaimopsinae De Coninck, 1965 (basis of record)
Dorylaimopsis Ditlevsen, 1918 (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)
Enoplolaimus de Man, 1893 (basis of record)
Enoplus Dujardin, 1845 (basis of record)
Ethmolaimidae Filipjev & Schuurmans Stekhoven, 1941 (basis of record)
Euchromadorinae Gerlach & Riemann, 1973 (basis of record)
Halalaiminae De Coninck, 1965 (basis of record)
Halalaimus de Man, 1888 (basis of record)
Halanonchinae Wieser & Hopper, 1967 (basis of record)
Halanonchus Cobb, 1920 (basis of record)
Halaphanolaimus Southern, 1914 accepted as Leptolaimus de Man, 1876 (basis of record)
Haliplectidae Chitwood, 1951 (basis of record)
Haliplectus Cobb, 1913 (basis of record)
Hypodontolaiminae De Coninck, 1965 (basis of record)
Hypodontolaimus de Man, 1886 (basis of record)
Innocuonema Inglis, 1969 (basis of record)
Ironidae de Man, 1876 (basis of record)
Ironoidea de Man, 1876 (basis of record)
Leptolaimidae Örley, 1880 (basis of record)
Leptolaimina accepted as Plectina (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)
Linhomoeus Bastian, 1865 (basis of record)
Metachromadora Filipjev, 1918 (basis of record)
Metalinhomoeus de Man, 1907 (basis of record)
Metoncholaimus Filipjev, 1918 (basis of record)
Meyliidae De Coninck, 1965 (basis of record)
Microlaimidae Micoletzky, 1922 (basis of record)
Microlaimoidea Micoletzky, 1922 (basis of record)
Microlaimus de Man, 1880 (basis of record)
Minolaimus Vitiello, 1970 (basis of record)
Molgolaiminae Jensen, 1978 (basis of record)
Monhystera Bastian, 1865 (basis of record)