Acanthomicrolaimus Stewart & Nicholas, 1987 (additional source)
Aponema Jensen, 1978 (additional source)
Bathynox (Bussau, 1993) Bussau & Vopel, 1999 (additional source)
Bolbolaimus Cobb, 1920 (taxonomy source)
Caligocanna Bussau, 1993 (additional source)
Calomicrolaimus Lorenzen, 1976 (new combination reference)
Calomicrolaimus honestus (de Man, 1922) Jensen, 1978 accepted as Microlaimus honestus De Man, 1922 (new combination reference)
Calomicrolaimus monstrosus (Gerlach, 1953) Vincx, 1981 accepted as Microlaimus monstrosus Gerlach, 1953 (new combination reference)
Ixonema Lorenzen, 1971 (additional source)
Ixonema sordidum Lorenzen, 1971 (additional source)
Microlaimidae Micoletzky, 1922 (taxonomy source)
Microlaimus de Man, 1880 (taxonomy source)
Microlaimus acanthus (Jayasree & Warwick, 1977) Kovalyev & Tchesunov, 2005 (new combination reference)
Microlaimus africanensis Furstenberg & Vincx, 1992 (additional source)
Microlaimus arenarius (Blome, 1982) Kovalyev & Miljutina, 2009 (new combination reference)
Microlaimus arenicola Schulz, 1938 (additional source)
Microlaimus borealis Steiner, 1916 (additional source)
Microlaimus capillaris Gerlach, 1957 (additional source)
Microlaimus clancularius Bussau, 1993 (additional source)
Microlaimus cochleatus Wieser, 1959 (additional source)
Microlaimus compridus Gerlach, 1956 (new combination reference)
Microlaimus conothelis (Lorenzen, 1973) Jensen, 1978 (additional source)
Microlaimus copulatus Jensen, 1988 (additional source)
Microlaimus criminalis Rieger & Ott, 1971 (additional source)
Microlaimus cyatholaimoides de Man, 1922 (additional source)
Microlaimus dentatus Chitwood, 1937 accepted as Microlaimus chitwoodi Gerlach, 1950 accepted as Bolbolaimus chitwoodi (Gerlach, 1950) Jensen, 1978 (additional source)
Microlaimus dimorphus Chitwood, 1937 (additional source)
Microlaimus dixiei Wieser, 1959 (additional source)
Microlaimus falklandiae Allgén, 1959 (additional source)
Microlaimus formosus Gerlach, 1957 (taxonomy source)
Microlaimus gerlachi Wieser, 1954 (additional source)
Microlaimus globiceps de Man, 1880 (additional source)
Microlaimus honestoides Meyl, 1954 (additional source)
Microlaimus honestus De Man, 1922 (new combination reference)
Microlaimus inermis Ditlevsen, 1923 (additional source)
Microlaimus kaurii Wieser, 1954 (additional source)
Microlaimus latilaimus Allgén, 1959 (additional source)
Microlaimus lazonus Vitiello, 1970 accepted as Molgolaimus lazonus (Vitiello, 1970) Jensen, 1978 (taxonomy source)
Microlaimus lepturus De Cillis, 1917 (additional source)
Microlaimus longispiculum Timm, 1961 (additional source)
Microlaimus lunatus (Wieser & Hopper, 1967) Jensen, 1978 (taxonomy source)
Microlaimus macrocirculus Gerlach, 1950 (additional source)
Microlaimus macrolaimus Allgén, 1947 (additional source)
Microlaimus marinus (Schulz, 1932) Schuurmans Stekhoven & De Coninck, 1933 (new combination reference)
Microlaimus microseta Gerlach, 1953 (additional source)
Microlaimus minutus Muthumbi & Vincx, 1999 (additional source)
Microlaimus monstrosus Gerlach, 1953 (additional source)
Microlaimus naidinae Tchesunov, 1978 (taxonomy source)
Microlaimus oblongilaimus Gerlach, 1955 (additional source)
Microlaimus ostracion Schuurmans Stekhoven, 1935 (additional source)
Microlaimus papillatus Gerlach, 1956 (taxonomy source)
Microlaimus papilliferus Allgén, 1959 (additional source)
Microlaimus paraconothelis Kovalyev & Tchesunov, 2005 (original description)
Microlaimus parahonestus Gerlach, 1950 (new combination reference)
Microlaimus pinguis Wieser, 1954 (additional source)
Microlaimus ponticus Sergeeva, 1976 (additional source)
Microlaimus punctulatus Gerlach, 1950 (additional source)
Microlaimus pwani Muthumbi & Vincx, 1999 (additional source)
Microlaimus pygmaeus Meyl, 1954 (additional source)
Microlaimus robustidens Schuurmans Stekhoven & De Coninck, 1933 (additional source)
Microlaimus sensus Wieser, 1954 (additional source)
Microlaimus setosus Hoeppli, 1926 (additional source)
Microlaimus sicarius Wieser, 1954 (additional source)
Microlaimus spinosus Gerlach, 1957 (new combination reference)
Microlaimus spirifer Warwick, 1970 accepted as Molgolaimus spirifer (Warwick, 1970) Shi & Xu, 2017 (new combination reference)
Microlaimus spirifer Warwick, 1970 accepted as Molgolaimus spirifer (Warwick, 1970) Shi & Xu, 2017 (additional source)
Microlaimus tenuicollis Gerlach, 1952 (new combination reference)
Microlaimus tenuispiculum de Man, 1922 (taxonomy source)
Microlaimus texianus Chitwood, 1951 (additional source)
Microlaimus undulatus Gerlach, 1953 (additional source)
Microlaimus zosterae Allgén, 1930 (additional source)
Molgolaimus Ditlevsen, 1921 (taxonomy source)
Molgolaimus tenuicaudatus (Allgén, 1959) Jensen, 1978 (taxonomy source)
Molgolaimus tenuilaimus (Allgén, 1932) Jensen, 1978 (taxonomy source)
Molgolaimus tenuispiculum Ditlevsen, 1921 (taxonomy source)
Paramicrolaimus Wieser, 1954 (additional source)
Prodesmodora Micoletzky, 1923 (additional source)
Pseudomicrolaimus Sergeeva, 1976 (new combination reference)
Pseudomicrolaimus dentatus (Allgén, 1935) Sergeeva, 1976 op. Kovalyev & Tchesunov, 2005 (new combination reference)
Pseudomicrolaimus denticulatus (Gerlach, 1953) Kovalyev & Tchesunov, 2005 (new combination reference)