Bodonematidae Jensen, 1991 (basis of record)
Catanema Cobb, 1920 (basis of record)
Comesa Gerlach, 1956 (basis of record)
Eudiplogaster Paramonov, 1952 (basis of record)
Paraethmolaimus Jensen, 1994 (basis of record)
Paramonohystera albigensis (Riemann, 1966) accepted as Promonhystera albigensis Riemann, 1966 (basis of record)
Parasphaerolaimus islandicus (Ditlevsen, 1926) Filipjev, 1946 (additional source)
Perspiria Wieser & Hopper, 1967 (basis of record)

North Atlantic for Amphimonhystera anechma (Southern, 1914) Lorenzen, 1977 
North Atlantic for Araeolaimus elegans de Man, 1888 
North Atlantic for Araeolaimus microphthalmus (de Man, 1893) Filipjev, 1918 
North Atlantic for Araeolaimus paucisetosus Wieser, 1951 
North Atlantic for Araeolaimus penelope Moore, 1977 
North Atlantic for Ascolaimus elongatus (Bütschli, 1874) Shuurmans Stekhoven & de Coninck, 1932 
North Atlantic for Astomonema southwardorum Austen, Warwick & Ryan, 1993 
North Atlantic for Axonolaimus helgolandicus Lorenzen, 1971 
North Atlantic for Axonolaimus hexapilus Wieser & Hopper, 1967 
North Atlantic for Axonolaimus orcombensis Warwick, 1970 
North Atlantic for Axonolaimus paraspinosus Schuurmans Stekhoven & Adam, 1931 
North Atlantic for Axonolaimus spinosus (Bütschli, 1874) de Man, 1889 
North Atlantic for Campylaimus lefeverei Gerlach, 1956 
North Atlantic for Cobbia caledonia Warwick & Platt, 1973 
North Atlantic for Cobbia trefusiaeformis de Man, 1907 
North Atlantic for Coninckia macrospirifera Zhang, 1983 
North Atlantic for Daptonema albigensis (Riemann, 1966) Hopper, 1968 
North Atlantic for Daptonema biggi (Gerlach, 1965) Lorenzen, 1977 
North Atlantic for Daptonema buetschlii Schuurmans-Stekhoven, 1935 
North Atlantic for Daptonema fallax (Lorenzen, 1972) Lorenzen, 1977 
North Atlantic for Daptonema furcatum (Juario, 1974) Lorenzen, 1977 
North Atlantic for Daptonema hirsutum (Vitiello, 1967) Lorenzen, 1977 
North Atlantic for Daptonema invagiferoum (Platt, 1973) Lorenzen, 1977 
North Atlantic for Daptonema normandicum (de Man, 1890) Lorenzen, 1977 
North Atlantic for Daptonema oxycerca (de Man, 1888) Lorenzen, 1977 
North Atlantic for Daptonema procerum (Gerlach, 1951) Lorenzen, 1977 
North Atlantic for Daptonema psammoides (Warwick, 1970) Tchesunov, 1990 
North Atlantic for Daptonema setifer (Gerlach, 1952) Lorenzen, 1977 
North Atlantic for Daptonema setosum (Bütschli, 1874) Lorenzen, 1977 
North Atlantic for Daptonema tenuispiculum (Ditlevsen, 1918) Lorenzen, 1977 
North Atlantic for Daptonema vicinum (Riemann, 1966) Lorenzen, 1977 
North Atlantic for Desmolaimus zeelandicus de Man, 1880 
North Atlantic for Diplolaimella stagnosa Lorenzen, 1966 
North Atlantic for Diplolaimelloides bruciei Hopper, 1970 
North Atlantic for Diplopeltis cirrhatus (Eberth, 1863) Cobb, 1891 
North Atlantic for Diplopeltis incisus Southern, 1914 
North Atlantic for Diplopeltula asetosa Juario, 1974 
North Atlantic for Eleutherolaimus stenosoma de Man, 1907 
North Atlantic for Eumorpholaimus sabulicolus Schulz, 1932 
North Atlantic for Gonionchus cumbraensis Benwell, 1981 
North Atlantic for Gonionchus inaequalis Warwick & Platt, 1973 
North Atlantic for Gonionchus longicaudatus (Ward, 1972) Lorenzen, 1977 
North Atlantic for Linhomoeus elongatus Bastian, 1865 
North Atlantic for Linhomoeus hirsutus Bastian, 1865 
North Atlantic for Metadesmolaimus aduncus Lorenzen, 1972 
North Atlantic for Metadesmolaimus gelana (Warwick & Platt, 1973) Lorenzen, 1977 
North Atlantic for Metadesmolaimus pandus Lorenzen, 1971 
North Atlantic for Metalinhomoeus filiformis (de Man, 1907) 
North Atlantic for Metalinhomoeus typicus de Man, 1907 
North Atlantic for Morlaixia obscura Vincx & Gourbault, 1988 
North Atlantic for Odontophora exharena Warwick & Platt, 1973 
North Atlantic for Odontophora longisetosa (Allgén, 1928) 
North Atlantic for Odontophora rectangula Lorenzen, 1971 
North Atlantic for Odontophora setosa (Allgén, 1929) 
North Atlantic for Odontophora villoti Luc & De Coninck, 1959 
North Atlantic for Odontophoroides paramonhystera Lambshead, 1982 
North Atlantic for Paralinhomoeus conicaudatus (Allgén, 1930) 
North Atlantic for Paralinhomoeus lepturus de Man, 1907 
North Atlantic for Paralinhomoeus tenuicaudatus (Bütschli, 1874) de Man, 1907 
North Atlantic for Paralinhomoeus uniovarium Warwick, 1970 
North Atlantic for Paramonohystera riemanni (Platt, 1973) Lorenzen, 1977 
North Atlantic for Parasphaerolaimus paradoxus Ditlevsen, 1918 
North Atlantic for Siphonolaimus cobbi Riemann, 1966 
North Atlantic for Siphonolaimus ewensis Warwick & Platt, 1973 
North Atlantic for Siphonolaimus niger de Man, 1893 
North Atlantic for Sphaerolaimus balticus Schneider, 1906 
North Atlantic for Sphaerolaimus gracilis de Man, 1876 
North Atlantic for Sphaerolaimus hirsutus Bastian, 1865 
North Atlantic for Sphaerolaimus islandicus Ditlevsen, 1926 
North Atlantic for Sphaerolaimus macrocirculus Filipjev, 1918 
North Atlantic for Terschellingia communis de Man, 1888 
North Atlantic for Terschellingia gourbaultae Austen, 1989 
North Atlantic for Terschellingia longicaudata de Man, 1907 
North Atlantic for Thalassomonhystera parva (Bastian, 1865) Jacobs, 1987 
North Atlantic for Thalassomonhystera venusta (Lorenzen, 1979) Jacobs, 1987 
North Atlantic for Theristus acer Bastian, 1865 
North Atlantic for Theristus bastiani Gerlach & Riemann, 1973 
North Atlantic for Theristus complexus Jayasree & Warwick, 1977 
North Atlantic for Theristus denticulatus Warwick, 1970 
North Atlantic for Theristus ensifer Gerlach, 1951 
North Atlantic for Theristus flevensis Schuurmans Stekhoven, 1935 
North Atlantic for Theristus heterospiculum (Allgén, 1932) Gerlach, 1953 
North Atlantic for Theristus interstitialis Warwick, 1970 
North Atlantic for Theristus longus Platt, 1973 
North Atlantic for Theristus otoplanobius Gerlach, 1951 
North Atlantic for Theristus pertenuis Schuurmans Stekhoven, 1935 
North Atlantic for Trichotheristus mirabilis (Schuurmans Stekhoven & De Coninck, 1933) 
North Atlantic for Xyala riemanni Boucher & Helléouët, 1977 
North Atlantic for Xyala striata Cobb, 1920