Amphimonhystera anechma (Southern, 1914) Lorenzen, 1977 (additional source)
Anticoma acuminata (Eberth, 1863) Bastian, 1865 (additional source)
Ascolaimus elongatus (Bütschli, 1874) Shuurmans Stekhoven & de Coninck, 1932 (additional source)
Axonolaimus helgolandicus Lorenzen, 1971 (additional source)
Axonolaimus orcombensis Warwick, 1970 (additional source)
Bathylaimus capacosus Hopper, 1962 (additional source)
Bolbolaimus teutonicus (Riemann, 1966) Jensen, 1978 (additional source)
Calomicrolaimus acanthus (Jayasree & Warwick, 1977) Jensen, 1978 accepted as Microlaimus acanthus (Jayasree & Warwick, 1977) Kovalyev & Tchesunov, 2005 (additional source)
Calomicrolaimus honestus (de Man, 1922) Jensen, 1978 accepted as Microlaimus honestus De Man, 1922 (additional source)
Calomicrolaimus parahonestus (Gerlach, 1950) Jensen, 1978 accepted as Microlaimus parahonestus Gerlach, 1950 (additional source)
Calomicrolaimus spirifer (Warwick, 1970) Jensen, 1978 accepted as Microlaimus spirifer Warwick, 1970 accepted as Molgolaimus spirifer (Warwick, 1970) Shi & Xu, 2017 (additional source)
Calyptronema maxweberi (de Man, 1922) (additional source)
Camacolaimus longicauda de Man, 1922 accepted as Deontolaimus longicauda (de Man, 1922) Holovachov & Boström, 2015 (additional source)
Ceramonema yunfengi Platt & Zhang, 1982 (additional source)
Chitwoodia tripapillata Jayasree, 1976 (additional source)
Choniolaimus panicus Gerlach, 1956 (additional source)
Chromadorina germanica (Bütschli, 1874) Wieser, 1954 (additional source)
Chromaspirina parapontica Luc & De Coninck, 1959 (additional source)
Cobbia trefusiaeformis de Man, 1907 (additional source)
Coninckia macrospirifera Zhang, 1983 (additional source)
Cyartonema elegans Jayasree & Warwick, 1977 (additional source)
Cyartonema germanicum Juario, 1972 (additional source)
Daptonema normandicum (de Man, 1890) Lorenzen, 1977 (additional source)
Daptonema setifer (Gerlach, 1952) Lorenzen, 1977 (additional source)
Daptonema tenuispiculum (Ditlevsen, 1918) Lorenzen, 1977 (additional source)
Desmodora tenuispiculum Allgén, 1928 accepted as Desmodorella tenuispiculum (Allgén, 1928) Gerlach, 1963 (additional source)
Dichromadora cephalata (Steiner, 1916) Kreis, 1929 (additional source)
Dichromadora cucullata Lorenzen, 1973 (additional source)
Dichromadora hyalocheile De Coninck & Schuurmans Stekhoven, 1933 (additional source)
Enoploides spiculohamatus Schulz, 1932 (additional source)
Enoplolaimus denticulatus Warwick, 1970 (additional source)
Enoplolaimus longicaudatus (Southern, 1914) Filipjev, 1921 (additional source)
Filitonchus filiformis (Warwick, 1971) Platt, 1982 (additional source)
Gonionchus cumbraensis Benwell, 1981 (additional source)
Gonionchus inaequalis Warwick & Platt, 1973 (additional source)
Gonionchus longicaudatus (Ward, 1972) Lorenzen, 1977 (additional source)
Halalaimus de Man, 1888 (additional source)
Halichoanolaimus robustus (Bastian, 1865) de Man, 1886 (additional source)
Leptolaimus ampullaceus Warwick, 1970 (additional source)
Leptolaimus elegans (Stekhoven & De Coninck, 1933) Gerlach, 1958 (additional source)
Linhomoeus Bastian, 1865 (additional source)
Mesacanthion diplechma (Southern, 1914) Filipjev, 1927 (additional source)
Mesacanthion hirsutum Gerlach, 1953 (additional source)
Metadesmolaimus aduncus Lorenzen, 1972 (additional source)
Metadesmolaimus gelana (Warwick & Platt, 1973) Lorenzen, 1977 (additional source)
Metadesmolaimus pandus Lorenzen, 1971 (additional source)
Metalinhomoeus de Man, 1907 (additional source)
Microlaimus acinaces Warwick & Platt, 1973 (additional source)
Microlaimus conothelis (Lorenzen, 1973) Jensen, 1978 (additional source)
Microlaimus marinus (Schulz, 1932) Schuurmans Stekhoven & De Coninck, 1933 (additional source)
Microlaimus ostracion Schuurmans Stekhoven, 1935 (additional source)
Monoposthia mirabilis Schulz, 1932 (additional source)
Nannolaimus fusus Gerlach, 1956 (additional source)
Neochromadora poecilosoma (de Man, 1893) Micoletzky, 1924 (additional source)
Neochromadora trichophora (Steiner, 1921) Gerlach, 1951 (additional source)
Odontophora exharena Warwick & Platt, 1973 (additional source)
Odontophora rectangula Lorenzen, 1971 (additional source)
Odontophoroides paramonhystera Lambshead, 1982 (additional source)
Onyx perfectus Cobb, 1891 (additional source)
Paracanthonchus thaumasius (Schulz, 1932) Vincx et al., 1982 (additional source)
Paracyatholaimoides multispiralis Gerlach, 1953 (additional source)
Paracyatholaimus occultus Gerlach, 1956 (additional source)
Paracyatholaimus pentodon Riemann, 1966 (additional source)
Pareurystomina acuminata (de Man, 1889) Gerlach, 1952 (additional source)
Pomponema debile Lorenzen, 1972 (additional source)
Pomponema multipapillatum (Filipjev, 1922) Wieser, 1954 (additional source)
Prochromadorella attenuata (Gerlach, 1952) Lorenzen, 1972 (additional source)
Prochromadorella ditlevseni (de Man, 1922) Wieser, 1954 (additional source)
Prochromadorella septempapillata Platt, 1973 (additional source)
Pseudonchus deconincki Warwick, 1969 (additional source)
Rhabdocoma americana Cobb, 1920 (additional source)
Rhabdodemania imer Warwick & Platt, 1973 (additional source)
Richtersia inaequalis Riemann, 1966 (additional source)
Sabatieria celtica Southern, 1914 (additional source)
Sabatieria punctata (Kreis, 1924) (additional source)
Setosabatieria hilarula (de Man, 1922) (additional source)
Sigmophoranema rufum (Cobb, 1933) Hope & Murphy, 1972 (additional source)
Siphonolaimus ewensis Warwick & Platt, 1973 (additional source)
Sphaerolaimus gracilis de Man, 1876 (additional source)
Spilophorella paradoxa (de Man, 1888) Filipjev, 1917 (additional source)
Spirinia laevis (Bastian, 1865) Gerlach, 1963 (additional source)
Spirinia parasitifera (Bastian, 1865) Gerlach, 1963 (additional source)
Stephanolaimus elegans Ditlevsen, 1918 (additional source)
Stephanolaimus jayasreei Platt, 1983 accepted as Setostephanolaimus longispiculum (Vadhyar, 1981) Tchesunov, 1994 (additional source)
Synonchiella riemanni Warwick, 1970 (additional source)
Tarvaia angusta Gerlach, 1953 (additional source)
Terschellingia longicaudata de Man, 1907 (additional source)
Theristus bastiani Gerlach & Riemann, 1973 (additional source)
Theristus denticulatus Warwick, 1970 (additional source)
Theristus interstitialis Warwick, 1970 (additional source)
Theristus pertenuis Schuurmans Stekhoven, 1935 (additional source)
Trichotheristus mirabilis (Schuurmans Stekhoven & De Coninck, 1933) accepted as Daptonema mirabilis (Schuurmans Stekhoven & De Coninck, 1933) Tchesunov, 1990 (additional source)
Tricoma brevirostris (Southern, 1914) (additional source)
Tricoma longirostris (Southern, 1914) (additional source)
Viscosia de Man, 1890 (additional source)
Viscosia langrunensis (de Man, 1890) (additional source)
Xyala striata Cobb, 1920 (additional source)