Ascolaimus Ditlevsen, 1919 (additional source)
Bathylaimus parafilicaudatus Allgén, 1935 accepted as Bathylaimus chesapeakensis Timm, 1952 (ecology source)
Chromaspirina parapontica Luc & De Coninck, 1959 (ecology source)
Chromaspirina pellita Gerlach, 1954 (ecology source)
Daptonema tenuispiculum (Ditlevsen, 1918) Lorenzen, 1977 (ecology source)
Dichromadora cucullata Lorenzen, 1973 (ecology source)
Dorylaimopsis Ditlevsen, 1918 (additional source)
Enoploides spiculohamatus Schulz, 1932 (ecology source)
Gonionchus heipi Vincx, 1986 (ecology source)
Karkinochromadora lorenzeni (Jensen, 1980) Blome, 1982 (ecology source)
Leptonemella aphanothecae Gerlach, 1950 (ecology source)
Metalinhomoeus de Man, 1907 (additional source)
Microlaimus ostracion Schuurmans Stekhoven, 1935 (ecology source)
Molgolaimus turgofrons (Lorenzen, 1971) Jensen, 1978 (ecology source)
Neochromadora munita Lorenzen, 1971 (ecology source)
Onyx perfectus Cobb, 1891 (ecology source)
Paracyatholaimus pentodon Riemann, 1966 (ecology source)
Paramesonchium belgicum Jensen, 1976 (ecology source)
Prochromadorella attenuata (Gerlach, 1952) Lorenzen, 1972 (ecology source)
Rhips ornata Cobb, 1920 (ecology source)
Rhynchonema quemer Boucher, 1974 (ecology source)
Richtersia inaequalis Riemann, 1966 (ecology source)
Sabatieria celtica Southern, 1914 (ecology source)
Sabatieria punctata (Kreis, 1924) (ecology source)
Sphaerolaimus Bastian, 1865 (additional source)
Spilophorella paradoxa (de Man, 1888) Filipjev, 1917 (ecology source)
Spirinia parasitifera (Bastian, 1865) Gerlach, 1963 (additional source)
Terschellingia longicaudata de Man, 1907 (ecology source)