Acantholaimus longisetosus Allgén, 1933 (additional source)
Anticoma acuminata (Eberth, 1863) Bastian, 1865 (taxonomy source)
Araeolaimus elegans de Man, 1888 (additional source)
Calomicrolaimus honestus (de Man, 1922) Jensen, 1978 accepted as Microlaimus honestus De Man, 1922 (additional source)
Camacolaimus tardus de Man, 1889 accepted as Deontolaimus tardus (de Man, 1889) Holovachov & Boström, 2015 (additional source)
Cyatholaimus gracilis (Eberth, 1863) Bastian, 1865 (additional source)
Deontostoma arcticum (Ssaweljev, 1912) Filipjev, 1916 (additional source)
Desmodora microchaeta Allgén, 1929 (additional source)
Desmodora scaldensis de Man, 1889 (additional source)
Desmodora tenuispiculum Allgén, 1928 accepted as Desmodorella tenuispiculum (Allgén, 1928) Gerlach, 1963 (additional source)
Desmolaimus de Man, 1880 (additional source)
Desmoscolex amaurus Lorenzen, 1972 (additional source)
Desmoscolex labiosus Lorenzen, 1969 (additional source)
Dichromadora Kreis, 1929 (additional source)
Diplopeltis cirrhatus (Eberth, 1863) Cobb, 1891 (additional source)
Enoplolaimus propinquus de Man, 1922 (additional source)
Euchromadora vulgaris (Bastian, 1865) de Man, 1886 (additional source)
Halichoanolaimus dolichurus Ssaweljev, 1912 (additional source)
Leptosomatum elongatum Bastian, 1865 accepted as Leptosomatum gracile Bastian, 1865 (additional source)
Linhomoeus elongatus Bastian, 1865 (additional source)
Mesacanthion Filipjev, 1927 (taxonomy source)
Meyliidae De Coninck, 1965 (additional source)
Microlaimus tenuispiculum de Man, 1922 (additional source)
Monhystera Bastian, 1865 (taxonomy source)
Monhystera disjuncta Bastian, 1865 accepted as Halomonhystera disjuncta (Bastian, 1865) Andrássy, 2006 (additional source)
Monhystera filiformis Bastian, 1865 accepted as Eumonhystera filiformis (Bastian, 1865) Andrássy, 1981 (additional source)
Monoposthia mirabilis Schulz, 1932 (additional source)
Neochromadora Micoletzky, 1924 (additional source)
Oncholaimus dujardinii de Man, 1876 (additional source)
Oncholaimus viridis Bastian, 1865 (additional source)
Oxyonchus dentatus (Ditlevsen, 1918) Filipjev, 1927 (additional source)
Paracanthonchus caecus (Bastian, 1865) Micoletzky, 1924 (additional source)
Paracanthonchus elongatus (de Man, 1907) Micoletzky, 1924 (additional source)
Paracanthonchus spectabilis Allgén, 1931 (additional source)
Paralinhomoeus lepturus de Man, 1907 (additional source)
Paralinhomoeus lineatus (Ditlevsen, 1918) Allgén, 1959 (additional source)
Pelagonema obtusicauda Filipjev, 1918 (additional source)
Phanoderma laticolle (Marion, 1870) Marion, 1875 (additional source)
Praeacanthonchus kreisi (Allgén, 1929) Gerlach & Riemann, 1973 (additional source)
Prochromadorella paramucrodonta (Allgén, 1929) Wieser, 1951 (additional source)
Rhips Cobb, 1920 (additional source)
Sabatieria celtica Southern, 1914 (additional source)
Sabatieria longicaudata Filipjev, 1922 (additional source)
Sabatieria ornata (Ditlevsen, 1918) Filipjev, 1922 (taxonomy source)
Sabatieria praedatrix de Man, 1907 (additional source)
Sabatieria tenuicaudata (Bastian, 1865) Rouville, 1905 (additional source)
Sphaerolaimus gracilis de Man, 1876 (additional source)
Theristus Bastian, 1865 (additional source)
Theristus acer Bastian, 1865 (additional source)
Theristus pellucidus Allgén, 1939 (additional source)
Thoracostoma coronatum (Eberth, 1863) Marion, 1870 (taxonomy source)
Tricoma nematoides (Greeff, 1869) (additional source)
Viscosia glabra (Bastian, 1865) de Man, 1890 (additional source)
Viscosia hanstroemi Wieser, 1953 (additional source)
Viscosia langrunensis (de Man, 1890) (additional source)
Viscosia viscosa (Bastian, 1865) de Man, 1890 (additional source)