Acantholaimus polydentatus Gerlach, 1951 (additional source)
Actinonema pachydermatum Cobb, 1920 (additional source)
Aegialoalaimus elegans de Man, 1907 (additional source)
Bathylaimus inermis (Ditlevsen, 1918) De Man, 1922 (additional source)
Belbolla asupplementata (Juario, 1974) Andrássy, 1973 (additional source)
Bolbolaimus dentatus (Allgén, 1935) Jensen, 1978 accepted as Pseudomicrolaimus dentatus (Allgén, 1935) Sergeeva, 1976 op. Kovalyev & Tchesunov, 2005 (additional source)
Cervonema macramphis Jensen, 1979 (additional source)
Choniolaimus papillatus Ditlevsen, 1918 (additional source)
Daptonema furcatum (Juario, 1974) Lorenzen, 1977 (additional source)
Daptonema proprium (Lorenzen, 1972) Lorenzen, 1977 (additional source)
Desmolaimus zeelandicus de Man, 1880 (additional source)
Diplolaimelloides bruciei Hopper, 1970 (additional source)
Dorylaimopsis punctata Ditlevsen, 1918 (additional source)
Halalaimus de Man, 1888 (additional source)
Halalaimus longicaudatus (Filipjev, 1927) Schneider, 1939 (additional source)
Halichoanolaimus dolichurus Ssaweljev, 1912 (additional source)
Metalinhomoeus de Man, 1907 (additional source)
Metalinhomoeus biformis Juario, 1974 (additional source)
Microlaimus acinaces Warwick & Platt, 1973 (additional source)
Molgolaimus allgeni (Gerlach, 1950) Jensen, 1978 (additional source)
Monhystera parelegantula De Coninck, 1943 accepted as Monhystrella parelegantula (De Coninck, 1943) Andrássy, 1981 (additional source)
Neotonchus meeki Warwick, 1971 (additional source)
Oncholaimus skawensis Ditlevsen, 1921 (additional source)
Oxyonchus dentatus (Ditlevsen, 1918) Filipjev, 1927 (additional source)
Pandolaimus latilaimus (Allgén, 1929) Schuurmans Stekhoven, 1935 (additional source)
Paracanthonchus longicaudatus Warwick, 1971 (ecology source)
Paralinhomoeus lepturus de Man, 1907 (additional source)
Paralongicyatholaimus minutus Warwick, 1971 (additional source)
Paramicrolaimus spirulifer Wieser, 1959 (additional source)
Parasphaerolaimus paradoxus Ditlevsen, 1918 (additional source)
Pareurystomina flagellicaudata Schuurmans Stekhoven, 1946 (additional source)
Pomponema multipapillatum (Filipjev, 1922) Wieser, 1954 (additional source)
Prochromadorella ditlevseni (de Man, 1922) Wieser, 1954 (additional source)
Pselionema simplex De Coninck, 1942 (additional source)
Rhabdodemania minor (Southern, 1914) Baylis & Daubney, 1926 (additional source)
Richtersia inaequalis Riemann, 1966 (additional source)
Sabatieria ornata (Ditlevsen, 1918) Filipjev, 1922 (additional source)
Sabatieria punctata (Kreis, 1924) (additional source)
Synonchiella riemanni Warwick, 1970 (additional source)
Terschellingia distalamphida Juario, 1974 (additional source)
Terschellingia longicaudata de Man, 1907 (additional source)
Thalassoalaimus de Man, 1893 (additional source)
Trefusia longicauda de Man, 1893 (additional source)