Adoncholaimus fuscus (Bastian, 1865) Filipjev, 1918 (ecology source)
Adoncholaimus thalassophygas (de Man, 1876) Filipjev, 1918 (ecology source)
Aegialoalaimus elegans de Man, 1907 (ecology source)
Aegialoalaimus tenuicaudatus Allgén, 1932 (ecology source)
Anoplostoma viviparum (Bastian, 1865) Bütschli, 1874 (ecology source)
Antomicron elegans (de Man, 1922) De Coninck, 1965 (ecology source)
Ascolaimus Ditlevsen, 1919 (ecology source)
Ascolaimus elongatus (Bütschli, 1874) Shuurmans Stekhoven & de Coninck, 1932 (ecology source)
Atrochromadora microlaima (de Man, 1889) Wieser, 1954 (ecology source)
Axonolaimus paraspinosus Schuurmans Stekhoven & Adam, 1931 (ecology source)
Axonolaimus spinosus (Bütschli, 1874) de Man, 1889 (ecology source)
Bathylaimus australis Cobb, 1894 (ecology source)
Bathylaimus stenolaimus Schuurmans-Stekhoven & De Coninck, 1933 (ecology source)
Calyptronema maxweberi (de Man, 1922) (ecology source)
Camacolaimus tardus de Man, 1889 accepted as Deontolaimus tardus (de Man, 1889) Holovachov & Boström, 2015 (ecology source)
Campylaimus gerlachi Timm, 1961 (ecology source)
Chaetonema riemanni Platt, 1973 (ecology source)
Chitwoodia warwicki Jayasree, 1976 (ecology source)
Chromadora axi Gerlach, 1951 (ecology source)
Chromadora macrolaima de Man, 1889 (ecology source)
Chromadora nudicapitata Bastian, 1865 (ecology source)
Chromadorina germanica (Bütschli, 1874) Wieser, 1954 (ecology source)
Chromadorita nana Lorenzen, 1973 (ecology source)
Dagda bipapillata Southern, 1914 (ecology source)
Daptonema biggi (Gerlach, 1965) Lorenzen, 1977 (ecology source)
Daptonema normandicum (de Man, 1890) Lorenzen, 1977 (ecology source)
Daptonema oxycerca (de Man, 1888) Lorenzen, 1977 (ecology source)
Daptonema riemanni (Platt, 1973) accepted as Paramonohystera riemanni (Platt, 1973) Lorenzen, 1977 (ecology source)
Daptonema tenuispiculum (Ditlevsen, 1918) Lorenzen, 1977 (ecology source)
Daptonema xyaliforme (Wieser & Hopper, 1967) Lorenzen, 1977 (ecology source)
Deontolaimus papillatus de Man, 1880 (ecology source)
Desmolaimus zeelandicus de Man, 1880 (ecology source)
Desmoscolex falcatus Lorenzen, 1972 (ecology source)
Dichromadora cephalata (Steiner, 1916) Kreis, 1929 (ecology source)
Dichromadora cucullata Lorenzen, 1973 (ecology source)
Dichromadora geophila (de Man, 1876) Kreis, 1929 (ecology source)
Dichromadora hyalocheile De Coninck & Schuurmans Stekhoven, 1933 (ecology source)
Diplopeltis incisus Southern, 1914 accepted as Diplopeltula incisa (Southern, 1914) Gerlach, 1962 accepted as Neodiplopeltula incisa (Southern, 1914) Holovachov & Boström, 2018 (ecology source)
Diplopeltula asetosa Juario, 1974 accepted as Diplopeltoides asetosus (Juario, 1974) Holovachov & Boström, 2017 (ecology source)
Eleutherolaimus amasi Bouwman, 1981 (ecology source)
Eleutherolaimus stenosoma de Man, 1907 (ecology source)
Enoploides longispiculosus Vitiello, 1967 (ecology source)
Enoplolaimus litoralis Schulz, 1936 (ecology source)
Enoplus brevis Bastian, 1865 (ecology source)
Halalaimus de Man, 1888 (ecology source)
Halalaimus gracilis de Man, 1888 (ecology source)
Halichoanolaimus robustus (Bastian, 1865) de Man, 1886 (ecology source)
Haliplectus wheeleri Coles, 1965 (ecology source)
Hypodontolaimus balticus (G. Schneider, 1906) Filipjev, 1918 (ecology source)
Leptolaimus de Man, 1876 (ecology source)
Leptolaimus acicula Lorenzen, 1966 (ecology source)
Leptolaimus ampullaceus Warwick, 1970 (ecology source)
Leptolaimus elegans (Stekhoven & De Coninck, 1933) Gerlach, 1958 (ecology source)
Leptolaimus luridus Timm, 1963 (ecology source)
Leptolaimus papilliger de Man, 1876 (ecology source)
Leptosomatidae Filipjev, 1916 (additional source)
Megadesmolaimus Wieser, 1954 (additional source)
Metachromadora Filipjev, 1918 (ecology source)
Metachromadora remanei Gerlach, 1951 accepted as Metachromadoroides remanei (Gerlach, 1951) Timm, 1961 (ecology source)
Metachromadora suecica (Allgén, 1929) Schulz, 1938 (ecology source)
Metachromadora vivipara (de Man, 1907) Allgen, 1928 accepted as Chromadoropsis vivipara (de Man, 1907) Allgen, 1928 (ecology source)
Metadesmolaimus gaelicus Platt, 1983 (ecology source)
Metalinhomoeus de Man, 1907 (ecology source)
Metalinhomoeus biformis Juario, 1974 (ecology source)
Metalinhomoeus biratus Vitiello, 1969 (ecology source)
Metalinhomoeus typicus de Man, 1907 (ecology source)
Microlaimus arenicola Schulz, 1938 (ecology source)
Microlaimus globiceps de Man, 1880 (ecology source)
Microlaimus marinus (Schulz, 1932) Schuurmans Stekhoven & De Coninck, 1933 (ecology source)
Microlaimus parahonestus Gerlach, 1950 (ecology source)
Microlaimus robustidens Schuurmans Stekhoven & De Coninck, 1933 (ecology source)
Molgolaimus cuanensis (Platt, 1973) Jensen, 1978 (ecology source)
Molgolaimus tenuispiculum Ditlevsen, 1921 (ecology source)
Molgolaimus turgofrons (Lorenzen, 1971) Jensen, 1978 (ecology source)
Monhysteridae de Man, 1876 (additional source)
Monoposthia mirabilis Schulz, 1932 (ecology source)
Neotonchus cupulatus Vitiello, 1970 (ecology source)
Nudora bipapillata Platt, 1973 (ecology source)
Odontophora Bütschli, 1874 (additional source)
Odontophora paravilloti Blome, 1982 (ecology source)
Odontophora rectangula Lorenzen, 1971 (ecology source)
Odontophora setosa (Allgén, 1929) (ecology source)
Oncholaimellus mediterraneus Schuurmans Stekhoven, 1942 (ecology source)
Oncholaimus oxyuris Ditlevsen, 1911 (ecology source)
Onyx sagittarius Gerlach, 1950 (ecology source)
Oxystomina elongata (Bütschli, 1874) Filipjev, 1921 (ecology source)
Paracanthonchus Micoletzky, 1924 (additional source)
Paracanthonchus caecus (Bastian, 1865) Micoletzky, 1924 (ecology source)
Paracanthonchus heterodontus (Schulz, 1932) Vincx et al., 1982 (ecology source)
Paracanthonchus thaumasius (Schulz, 1932) Vincx et al., 1982 (ecology source)
Praeacanthonchus Micoletzky, 1924 (additional source)
Praeacanthonchus punctatus (Bastian, 1865) Micoletzky, 1924 (ecology source)
Prochromadorella ditlevseni (de Man, 1922) Wieser, 1954 (ecology source)
Pseudolella granulifera Cobb, 1920 (ecology source)
Ptycholaimellus Cobb, 1920 (ecology source)
Ptycholaimellus ponticus (Filipjev, 1922) Gerlach, 1955 (ecology source)
Sabatieria breviseta Schuurmans Stekhoven, 1935 accepted as Sabatieria pulchra (Schneider, 1906) Riemann, 1970 (ecology source)
Sabatieria celtica Southern, 1914 (ecology source)
Sabatieria longisetosa (Kreis, 1929) (ecology source)
Sabatieria longispinosa Lorenzen, 1971 (ecology source)