Adoncholaimus fuscus (Bastian, 1865) Filipjev, 1918 (additional source)
Adoncholaimus thalassophygas (de Man, 1876) Filipjev, 1918 (additional source)
Aegialoalaimus elegans de Man, 1907 (additional source)
Anoplostoma viviparum (Bastian, 1865) Bütschli, 1874 (additional source)
Ascolaimus elongatus (Bütschli, 1874) Shuurmans Stekhoven & de Coninck, 1932 (additional source)
Axonolaimus paraspinosus Schuurmans Stekhoven & Adam, 1931 (additional source)
Calyptronema maxweberi (de Man, 1922) (additional source)
Camacolaimus tardus de Man, 1889 accepted as Deontolaimus tardus (de Man, 1889) Holovachov & Boström, 2015 (additional source)
Chromadora nudicapitata Bastian, 1865 (additional source)
Chromadorita tenuis (G. Schneider, 1906) Filipjev, 1922 (additional source)
Deontolaimus papillatus de Man, 1880 (additional source)
Desmolaimus zeelandicus de Man, 1880 (additional source)
Dichromadora cephalata (Steiner, 1916) Kreis, 1929 (additional source)
Dichromadora scandula Lorenzen, 1966 (additional source)
Diplolaimella ocellata (Bütschli, 1874) (additional source)
Halalaimus gracilis de Man, 1888 (additional source)
Halalaimus terrestris Gerlach, 1959 (additional source)
Halichoanolaimus robustus (Bastian, 1865) de Man, 1886 (additional source)
Haliplectus dorsalis Cobb in Chitwood, 1956 (additional source)
Hypodontolaimus balticus (G. Schneider, 1906) Filipjev, 1918 (additional source)
Leptolaimus elegans (Stekhoven & De Coninck, 1933) Gerlach, 1958 (additional source)
Leptolaimus papilliger de Man, 1876 (additional source)
Metachromadora remanei Gerlach, 1951 accepted as Metachromadoroides remanei (Gerlach, 1951) Timm, 1961 (additional source)
Microlaimus globiceps de Man, 1880 (additional source)
Microlaimus robustidens Schuurmans Stekhoven & De Coninck, 1933 (additional source)
Monhystera disjuncta Bastian, 1865 accepted as Halomonhystera disjuncta (Bastian, 1865) Andrássy, 2006 (additional source)
Monhystera parelegantula De Coninck, 1943 accepted as Monhystrella parelegantula (De Coninck, 1943) Andrássy, 1981 (additional source)
Odontophora armata (Ditlevsen, 1918) Allgén, 1929 (additional source)
Oncholaimus oxyuris Ditlevsen, 1911 (additional source)
Oxystomina elongata (Bütschli, 1874) Filipjev, 1921 (redescription)
Paracyatholaimus intermedius (de Man, 1880) Micoletzky, 1922 (additional source)
Sabatieria celtica Southern, 1914 (additional source)
Sphaerolaimus gracilis de Man, 1876 (redescription)
Sphaerolaimus hirsutus Bastian, 1865 (additional source)
Spilophorella papillata Kreis, 1929 (additional source)
Spilophorella paradoxa (de Man, 1888) Filipjev, 1917 (additional source)
Thalassoalaimus tardus de Man, 1893 (additional source)
Theristus ensifer Gerlach, 1951 (additional source)
Theristus pertenuis Schuurmans Stekhoven, 1935 (additional source)
Tripyloides marinus (Bütschli, 1874) de Man, 1886 (additional source)
Viscosia viscosa (Bastian, 1865) de Man, 1890 (additional source)