Adoncholaimus lepidus (de Man, 1889) Filipjev, 1918 (additional source)
Adoncholaimus thalassophygas (de Man, 1876) Filipjev, 1918 (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)
Axonolaimus spinosus (Bütschli, 1874) de Man, 1889 (additional source)
Bathylaimus inermis (Ditlevsen, 1918) De Man, 1922 (additional source)
Bathylaimus paralongisetosus Schuurmans Stekhoven & De Coninck, 1933 (additional source)
Bathylaimus stenolaimus Schuurmans-Stekhoven & De Coninck, 1933 (additional source)
Chromadora nudicapitata Bastian, 1865 (additional source)
Desmodora pontica Filipjev, 1922 (additional source)
Dichromadora cephalata (Steiner, 1916) Kreis, 1929 (additional source)
Dichromadora geophila (de Man, 1876) Kreis, 1929 (additional source)
Dichromadora hyalocheile De Coninck & Schuurmans Stekhoven, 1933 (additional source)
Eleutherolaimus stenosoma de Man, 1907 (additional source)
Enoplolaimus litoralis Schulz, 1936 (additional source)
Enoplolaimus propinquus de Man, 1922 (additional source)
Enoplolaimus subterraneus Gerlach, 1953 (additional source)
Enoplolaimus vulgaris de Man, 1893 (additional source)
Enoplus brevis Bastian, 1865 (additional source)
Enoplus communis Bastian, 1865 (additional source)
Enoplus schulzi Gerlach, 1952 (additional source)
Euchromadora vulgaris (Bastian, 1865) de Man, 1886 (additional source)
Eurystomina terricola (de Man, 1907) Filipjev, 1921 (additional source)
Gammanema conicauda Gerlach, 1953 (additional source)
Halalaimus gracilis de Man, 1888 (additional source)
Halichoanolaimus robustus (Bastian, 1865) de Man, 1886 (additional source)
Hypodontolaimus balticus (G. Schneider, 1906) Filipjev, 1918 (additional source)
Hypodontolaimus inaequalis (Bastian, 1865) De Man, 1886 (additional source)
Leptolaimus papilliger de Man, 1876 (additional source)
Leptonemella aphanothecae Gerlach, 1950 (additional source)
Metachromadora suecica (Allgén, 1929) Schulz, 1938 (additional source)
Microlaimus marinus (Schulz, 1932) Schuurmans Stekhoven & De Coninck, 1933 (additional source)
Microlaimus robustidens Schuurmans Stekhoven & De Coninck, 1933 (additional source)
Monhystera Bastian, 1865 (additional source)
Monhystera parva (Bastian, 1865) Butschli, 1874 accepted as Thalassomonhystera parva (Bastian, 1865) Jacobs, 1987 (additional source)
Monoposthia costata (Bastian, 1865) de Man, 1889 (additional source)
Monoposthia mirabilis Schulz, 1932 (additional source)
Neochromadora poecilosoma (de Man, 1893) Micoletzky, 1924 (additional source)
Neochromadora tecta Gerlach, 1951 (additional source)
Neochromadora trichophora (Steiner, 1921) Gerlach, 1951 (additional source)
Odontophora armata (Ditlevsen, 1918) Allgén, 1929 (additional source)
Odontophora setosa (Allgén, 1929) (additional source)
Oncholaimus brachycercus de Man, 1889 (additional source)
Oncholaimus campylocercoides De Coninck & Schuurmans Stekhoven, 1933 (additional source)
Oncholaimus oxyuris Ditlevsen, 1911 (additional source)
Onyx sagittarius Gerlach, 1950 (additional source)
Oxystomina elongata (Bütschli, 1874) Filipjev, 1921 (additional source)
Paracanthonchus longus Allgén, 1934 (additional source)
Paracyatholaimus intermedius (de Man, 1880) Micoletzky, 1922 (additional source)
Paracyatholaimus proximus (Bütschli, 1874) Micoletzky, 1924 (additional source)
Pareurystomina acuminata (de Man, 1889) Gerlach, 1952 (additional source)
Siphonolaimus niger de Man, 1893 (additional source)
Sphaerolaimus balticus Schneider, 1906 (additional source)
Sphaerolaimus gracilis de Man, 1876 (additional source)
Sphaerolaimus hirsutus Bastian, 1865 (additional source)
Spilophorella candida Gerlach, 1951 (additional source)
Spilophorella paradoxa (de Man, 1888) Filipjev, 1917 (additional source)
Stephanolaimus elegans Ditlevsen, 1918 (additional source)
Thalassoalaimus tardus de Man, 1893 (additional source)
Theristus flevensis Schuurmans Stekhoven, 1935 (additional source)
Theristus otoplanobius Gerlach, 1951 (additional source)
Trefusia longicauda de Man, 1893 (additional source)
Tripyloides marinus (Bütschli, 1874) de Man, 1886 (additional source)
Viscosia langrunensis (de Man, 1890) (additional source)
Viscosia viscosa (Bastian, 1865) de Man, 1890 (additional source)
Xyala striata Cobb, 1920 (additional source)