Barbonema horridum Gerlach, 1956 (original description)
Calomicrolaimus compridus (Gerlach, 1956) Gourbault & Vincx, 1988 accepted as Microlaimus compridus Gerlach, 1956 (original description)
Campylaimus cylindricus Gerlach, 1956 (original description)
Campylaimus lefeverei Gerlach, 1956 (original description)
Campylaimus lefevrei Gerlach, 1956 accepted as Campylaimus lefeverei Gerlach, 1956 (original description)
Chitwoodia Gerlach, 1956 (original description)
Chitwoodia falcata Gerlach, 1956 (original description)
Chitwoodia menora Gerlach, 1956 (original description)
Choniolaimus panicus Gerlach, 1956 (original description)
Comesa Gerlach, 1956 (original description)
Comesa corcunda Gerlach, 1956 accepted as Neotonchus corcundus (Gerlach, 1956) Wieser & Hopper, 1966 (original description)
Coninckia Gerlach, 1956 (original description)
Coninckia circularis Gerlach, 1956 (original description)
Daptonema curvatus Gerlach, 1956 accepted as Daptonema curvatum (Gerlach, 1956) Wieser, 1959 (original description)
Dasynemella conica Gerlach, 1956 (original description)
Didelta cascudum Gerlach, 1956 (original description)
Diplopeltula nuda Gerlach, 1956 accepted as Diplopeltoides nudus (Gerlach, 1956) Tchesunov, 2006 (original description)
Diplopeltula striata Gerlach, 1956 accepted as Diplopeltoides striatus (Gerlach, 1956) Holovachov & Boström, 2017 (original description)
Filitonchus volutus (Gerlach, 1956) Platt, 1982 (ecology source)
Halalaimus horridus Gerlach, 1956 (original description)
Halalaimus papillifer Gerlach, 1956 (original description)
Halalaimus striatus Gerlach, 1956 (original description)
Lauratonema originalis Gerlach, 1956 accepted as Lauratonemoides originalis (Gerlach, 1956) De Coninck, 1965 (original description)
Lauratonemoides De Coninck, 1965 (original description)
Lauratonemoides originale (Gerlach, 1956) accepted as Lauratonemoides originalis (Gerlach, 1956) De Coninck, 1965 (original description)
Leptolaimus nobilis Gerlach, 1956 (original description)
Leptolaimus tenuis Gerlach, 1956 (original description)
Litinium bananum Gerlach, 1956 (original description)
Metacomesoma aequalis Gerlach, 1956 (original description)
Meylia Gerlach, 1956 (original description)
Meylia alata (Gerlach, 1956) (original description)
Meylia alata (Gerlach, 1956) (ecology source)
Meylia lissa Gerlach, 1956 accepted as Gerlachius lissus (Gerlach, 1956) (original description)
Meylia spinosa Gerlach, 1956 accepted as Boucherius spinosus (Gerlach, 1956) (original description)
Microlaimus compridus Gerlach, 1956 (original description)
Nannolaimus fusus Gerlach, 1956 (original description)
Nannolaimus volutus Gerlach, 1956 accepted as Filitonchus volutus (Gerlach, 1956) Platt, 1982 (original description)
Neotonchus corcundus (Gerlach, 1956) Wieser & Hopper, 1966 (ecology source)
Oxystomina longiseta Allgén, 1947 accepted as Wieseria longiseta (Allgén, 1947) Gerlach, 1956 (new combination reference)
Paracyatholaimus occultus Gerlach, 1956 (original description)
Paratricoma Gerlach, 1956 (original description)
Paratricoma aberrans (Kreis, 1938) Gerlach, 1956 (new combination reference)
Paratricoma papillifer Gerlach, 1956 (original description)
Polysigma fuscum Gerlach, 1956 (original description)
Saveljevia cornuta Gerlach, 1956 (original description)
Scaptrella tenuicaudata Gerlach, 1956 (original description)
Spiliphera hirsuta Gerlach, 1956 accepted as Trichethmolaimus hirsutus (Gerlach, 1956) accepted as Ethmolaimus hirsutus (Gerlach, 1956) Jensen, 1994 (original description)
Theristus curvatus Gerlach, 1956 accepted as Daptonema curvatum (Gerlach, 1956) Wieser, 1959 (original description)
Theristus hamatus Gerlach, 1956 accepted as Metadesmolaimus hamatus (Gerlach, 1956) Lorenzen, 1972 (original description)
Theristus maior Gerlach, 1956 accepted as Valvaelaimus maior (Gerlach, 1956) Lorenzen, 1977 (original description)
Theristus trichinus Gerlach, 1956 accepted as Daptonema trichinus (Gerlach, 1956) (original description)
Trichethmolaimus hirsutus (Gerlach, 1956) accepted as Ethmolaimus hirsutus (Gerlach, 1956) Jensen, 1994 (original description)
Wieseria Gerlach, 1956 (original description)
Wieseria clavata Gerlach, 1956 (original description)
Wieseria glandulosa (Kreis, 1929) Gerlach, 1956 (new combination reference)
Wieseria inaequalis Gerlach, 1956 (original description)
Wieseria longiseta (Allgén, 1947) Gerlach, 1956 (new combination reference)
Wieseria pica Gerlach, 1956 (original description)

Kiel Bay for Calomicrolaimus compridus (Gerlach, 1956) Gourbault & Vincx, 1988 
Kiel Bay for Halalaimus striatus Gerlach, 1956 
Kiel Bay for Microlaimus compridus Gerlach, 1956 
Kieler Bucht for Comesa corcunda Gerlach, 1956 
Kieler Bucht for Filitonchus volutus (Gerlach, 1956) Platt, 1982 
Kieler Bucht for Halalaimus papillifer Gerlach, 1956 
North Sea for Meylia alata (Gerlach, 1956) 
North Sea for Meylia lissa Gerlach, 1956 
North Sea for Meylia spinosa Gerlach, 1956 
North Sea for Paratricoma papillifer Gerlach, 1956