Acanthonchus Cobb, 1920 (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)
Axonolaimoidea Filipjev, 1918 (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)
Chromadoroidea Filipjev, 1917 (basis of record)
Comesomatidae Filipjev, 1918 (basis of record)
Cyatholaimidae Filipjev, 1918 (basis of record)
Daptonema Cobb, 1920 (basis of record)
Desmodoridae Filipjev, 1922 (basis of record)
Desmodoroidea Filipjev, 1922 (basis of record)
Desmolaiminae Schneider, 1926 (basis of record)
Dorylaimopsinae De Coninck, 1965 (basis of record)
Dorylaimopsis Ditlevsen, 1918 (basis of record)
Enoplia (basis of record)
Enoplida (basis of record)
Enoplina (basis of record)
Enoploidea Dujardin, 1845 (basis of record)
Ethmolaimidae Filipjev & Schuurmans Stekhoven, 1941 (basis of record)
Halalaiminae De Coninck, 1965 (basis of record)
Halalaimus de Man, 1888 (basis of record)
Halichoanolaimus de Man, 1886 (basis of record)
Haliplectidae Chitwood, 1951 (basis of record)
Haliplectus Cobb, 1913 (basis of record)
Hypodontolaiminae De Coninck, 1965 (basis of record)
Ironidae de Man, 1876 (basis of record)
Ironoidea de Man, 1876 (basis of record)
Linhomoeidae Filipjev, 1922 (basis of record)
Metalinhomoeus de Man, 1907 (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)
Neotonchidae Wieser & Hopper, 1966 accepted as Ethmolaimidae Filipjev & Schuurmans Stekhoven, 1941 (basis of record)
Neotonchus Cobb, 1933 (basis of record)
Oxystominidae Chitwood, 1935 (basis of record)
Ptycholaimellus Cobb, 1920 (basis of record)
Rhabditida (basis of record)
Sabatieria de Rouville, 1903 (basis of record)
Sabatieriinae Filipjev, 1934 (basis of record)
Selachinematidae Cobb, 1915 (basis of record)
Siphonolaimoidea Filipjev, 1918 (basis of record)
Spilophorella Filipjev, 1917 (basis of record)
Spirinia Gerlach, 1963 (basis of record)
Spiriniinae Chitwood, 1936 (basis of record)
Terschellingia de Man, 1888 (basis of record)
Thalassironinae (basis of record)
Thalassomonhystera Jacobs, 1987 (basis of record)
Trissonchulus Cobb, 1920 (basis of record)
Xyalidae Chitwood, 1951 (basis of record)