Acoela (basis of record)
Acrorhynchides Strand, 1928 (additional source)
Acrorhynchides robustus (Karling, 1931) Strand, 1928 (additional source)
Adenorhynchus Meixner, 1938 (additional source)
Adenorhynchus balticus Meixner, 1938 (additional source)
Amphirhynchus Schilke, 1970 (additional source)
Amphirhynchus caudatus Schilke, 1970 (additional source)
Anaperidae Dörjes, 1968 accepted as Convolutidae Graff, 1905 (additional source)
Anaperus Graff, 1911 accepted as Thalassoanaperus Hernandez, 2018 (additional source)
Anaperus tvaerminnensis (Luther, 1912) accepted as Thalassoanaperus tvaerminnensis (Luther, 1912) (additional source)
Anthopharynx Karling, 1940 (additional source)
Anthopharynx vaginatus Karling, 1940 (additional source)
Archiloa de Beauchamp, 1910 (additional source)
Archiloa petiti Ax, 1956 (additional source)
Archiloa westbladi Ax, 1954 accepted as Archiloa rivularis de Beauchamp, 1910 (additional source)
Archilopsis Meixner, 1938 (additional source)
Archilopsis arenaria Martens, Curini-Galletti & Pucinelli, 1989 (additional source)
Archilopsis marifuga Martens, Curini-Galletti & Pucinelli, 1989 (additional source)
Archimonocelididae Meixner, 1938 (basis of record)
Archimonocelis Meixner, 1938 (additional source)
Archimonocelis oostendensis Martens & Schockaert, 1981 (additional source)
Archimonotresis Meixner, 1938 (additional source)
Archimonotresis limophila Meixner, 1938 (additional source)
Astrotorhynchus Graff, 1905 (additional source)
Astrotorhynchus bifidus (McIntosh, 1874) Graff, 1905 (additional source)
Aulopharynx Ehlers, 1972 (additional source)
Aulopharynx aestuarius Ehlers, 1972 (additional source)
Baicalellia Nasonov, 1930 (additional source)
Baicalellia brevituba (Luther, 1918) Nasonov, 1930 (additional source)
Baicalellia subsalina Ax, 1954 (additional source)
Bothriomolus Hallez, 1909 (additional source)
Bothriomolus balticus Meixner, 1938 (additional source)
Bradynectes Rieger, 1971 (additional source)
Bradynectes sterreri Rieger, 1971 (additional source)
Bresslauilla Reisinger, 1929 (additional source)
Bresslauilla relicta Reisinger, 1929 (additional source)
Brinkmanniella Luther, 1943 (additional source)
Brinkmanniella macrostomoides Luther, 1948 (additional source)
Byrsophlebidae Graff, 1882 (additional source)
Carcharodognathus Evdonin, 1977 accepted as Paragnathorhynchus Meixner, 1938 (additional source)
Carcharodognathus stilofer (Schilke, 1970) Evdonin, 1977 accepted as Paragnathorhynchus subterraneus Meixner, 1938 (additional source)
Carcharodorhynchus Meixner, 1938 (additional source)
Carcharodorhynchus flavidus Brunet, 1967 (additional source)
Carcharodorhynchus isolatus Schilke, 1970 (additional source)
Carcharodorhynchus listensis Schilke, 1970 (additional source)
Carcharodorhynchus subterraneus Meixner, 1938 (additional source)
Carenscoilia Sopott, 1972 (additional source)
Carenscoilia bidentata Sopott, 1972 (additional source)
Carenscoilia biforamen Sopott, 1972 (additional source)
Castrada Schmidt, 1861 (additional source)
Catenulida (basis of record)
Cheliplana de Beauchamp, 1927 (additional source)
Cheliplana boadeni Schilke, 1970 (additional source)
Cheliplana marcusi (Karling, 1956) Karling, 1983 (additional source)
Cheliplana remanei (Meixner, 1928) Karling, 1983 (additional source)
Cheliplana stylifera Karling, 1949 (additional source)
Cheliplanilla Meixner, 1938 (additional source)
Cheliplanilla caudata Meixner, 1938 (additional source)
Cheliplanilla rubra Schilke, 1970 (additional source)
Childiidae Dörjes, 1968 accepted as Mecynostomidae Dörjes, 1968 (additional source)
Cicerina Giard, 1904 (additional source)
Cicerinidae Meixner, 1928 (additional source)
Ciliopharyngiella Ax, 1952 (additional source)
Ciliopharyngiella constricta Martens & Schockaert, 1981 (additional source)
Ciliopharyngiellidae Ax, 1952 (additional source)
Cirrifera Sopott, 1972 (additional source)
Cirrifera aculeata (Ax, 1951) (additional source)
Cirrifera dumosa Sopott, 1972 (additional source)
Coelogynopora Steinböck, 1924 (additional source)
Coelogynopora axi Sopott, 1972 (additional source)
Coelogynopora biarmata Steinböck, 1924 (additional source)
Coelogynopora forcipis Sopott-Ehlers, 1976 (additional source)
Coelogynopora gynocotyla Steinböck, 1924 (additional source)
Coelogynopora schultzii Meixner, 1938 accepted as Coelogynopora schulzii Meixner, 1938 (additional source)
Coelogynopora schulzei Meixner, 1938 accepted as Coelogynopora schulzii Meixner, 1938 (basis of record)
Coelogynopora solifer Sopott, 1972 (additional source)
Coelogynoporidae Karling, 1966 (additional source)
Coelogynoporidarum (basis of record)
Coronhelmis Luther, 1948 (additional source)
Coronhelmis multispinosus Luther, 1948 (additional source)
Cylindrostoma Ørsted, 1845 (additional source)
Cylindrostoma fingalianum (Claparède, 1861) (basis of record)
Cylindrostomidae Reisinger, 1924 accepted as Pseudostomidae Graff, 1904-08 (additional source)
Cystiplana Karling, 1964 (additional source)
Cystiplana paradoxa Karling, 1964 (additional source)
Cystiplanidae Karling, 1964 (additional source)
Dalyelliidae Graff, 1905 (additional source)
Dalyellioida accepted as Dalytyphloplanida (basis of record)
Dalyellioidarum (basis of record)
Diascorhynchidae Meixner, 1928 (additional source)
Diascorhynchus Meixner, 1928 (additional source)
Diascorhynchus rubrus Boaden, 1963 (additional source)
Diascorhynchus serpens Karling, 1949 (additional source)
Dochmiotrema Hofsten, 1907 (additional source)
Dochmiotrema limicola Hofsten, 1907 (additional source)
Dolichomacrostomidae Rieger, 1971 (additional source)
Doliopharynx Ehlers, 1972 (additional source)
Doliopharynx geminocirro Ehlers, 1972 (additional source)
Duplominona Karling, 1966 (additional source)
Duplominona septentrionalis Martens, 1983 (additional source)

Atlantic Coast of France for Haloplanella obtusituba Luther, 1946 
Belgian Coast for Archiloa petiti Ax, 1956 
Belgian Coast for Archilopsis arenaria Martens, Curini-Galletti & Pucinelli, 1989 
Belgian Coast for Archilopsis marifuga Martens, Curini-Galletti & Pucinelli, 1989 
Belgian Coast for Coronhelmis multispinosus Luther, 1948 
Belgian Coast for Hangethellia calceifera Karling, 1940 
Belgian Coast for Macrostomum balticum Luther, 1947 
Belgian Coast for Placorhynchus dimorphis Karling, 1947 
Belgian Coast for Placorhynchus octaculeatus octaculeatus Karling, 1931 
Belgian Coast for Provortex affinis (Jensen, 1878) Graff, 1882 
Belgian Exclusive Economic Zone for Adenorhynchus balticus Meixner, 1938 
Belgian Exclusive Economic Zone for Adenorhynchus balticus Meixner, 1938 
Belgian Exclusive Economic Zone for Amphirhynchus caudatus Schilke, 1970 
Belgian Exclusive Economic Zone for Archiloa petiti Ax, 1956 
Belgian Exclusive Economic Zone for Archilopsis arenaria Martens, Curini-Galletti & Pucinelli, 1989 
Belgian Exclusive Economic Zone for Archilopsis arenaria Martens, Curini-Galletti & Pucinelli, 1989 
Belgian Exclusive Economic Zone for Archilopsis arenaria Martens, Curini-Galletti & Pucinelli, 1989 
Belgian Exclusive Economic Zone for Archilopsis marifuga Martens, Curini-Galletti & Pucinelli, 1989 
Belgian Exclusive Economic Zone for Archimonocelis oostendensis Martens & Schockaert, 1981 
Belgian Exclusive Economic Zone for Archimonocelis oostendensis Martens & Schockaert, 1981 
Belgian Exclusive Economic Zone for Archimonocelis oostendensis Martens & Schockaert, 1981 
Belgian Exclusive Economic Zone for Aulopharynx aestuarius Ehlers, 1972 
Belgian Exclusive Economic Zone for Aulopharynx aestuarius Ehlers, 1972 
Belgian Exclusive Economic Zone for Bradynectes sterreri Rieger, 1971 
Belgian Exclusive Economic Zone for Bradynectes sterreri Rieger, 1971 
Belgian Exclusive Economic Zone for Bresslauilla relicta Reisinger, 1929 
Belgian Exclusive Economic Zone for Bresslauilla relicta Reisinger, 1929 
Belgian Exclusive Economic Zone for Bresslauilla relicta Reisinger, 1929 
Belgian Exclusive Economic Zone for Brinkmanniella macrostomoides Luther, 1948 
Belgian Exclusive Economic Zone for Carcharodognathus stilofer (Schilke, 1970) Evdonin, 1977 
Belgian Exclusive Economic Zone for Carcharodorhynchus flavidus Brunet, 1967 
Belgian Exclusive Economic Zone for Carcharodorhynchus isolatus Schilke, 1970 
Belgian Exclusive Economic Zone for Carcharodorhynchus isolatus Schilke, 1970 
Belgian Exclusive Economic Zone for Carcharodorhynchus listensis Schilke, 1970 
Belgian Exclusive Economic Zone for Carcharodorhynchus listensis Schilke, 1970 
Belgian Exclusive Economic Zone for Carenscoilia bidentata Sopott, 1972 
Belgian Exclusive Economic Zone for Carenscoilia bidentata Sopott, 1972 
Belgian Exclusive Economic Zone for Carenscoilia bidentata Sopott, 1972 
Belgian Exclusive Economic Zone for Carenscoilia biforamen Sopott, 1972 
Belgian Exclusive Economic Zone for Carenscoilia biforamen Sopott, 1972 
Belgian Exclusive Economic Zone for Cheliplana de Beauchamp, 1927 
Belgian Exclusive Economic Zone for Cheliplana de Beauchamp, 1927 
Belgian Exclusive Economic Zone for Cheliplana de Beauchamp, 1927 
Belgian Exclusive Economic Zone for Cheliplana boadeni Schilke, 1970 
Belgian Exclusive Economic Zone for Cheliplana boadeni Schilke, 1970 
Belgian Exclusive Economic Zone for Cheliplana marcusi (Karling, 1956) Karling, 1983 
Belgian Exclusive Economic Zone for Cheliplana marcusi (Karling, 1956) Karling, 1983 
Belgian Exclusive Economic Zone for Cheliplana remanei (Meixner, 1928) Karling, 1983 
Belgian Exclusive Economic Zone for Cheliplana remanei (Meixner, 1928) Karling, 1983 
Belgian Exclusive Economic Zone for Cheliplana remanei (Meixner, 1928) Karling, 1983 
Belgian Exclusive Economic Zone for Cheliplana stylifera Karling, 1949 
Belgian Exclusive Economic Zone for Cheliplana stylifera Karling, 1949 
Belgian Exclusive Economic Zone for Cheliplana stylifera Karling, 1949 
Belgian Exclusive Economic Zone for Cheliplanilla caudata Meixner, 1938 
Belgian Exclusive Economic Zone for Cheliplanilla caudata Meixner, 1938 
Belgian Exclusive Economic Zone for Cicerina brevicirrus Meixner, 1928 
Belgian Exclusive Economic Zone for Cicerina brevicirrus Meixner, 1928 
Belgian Exclusive Economic Zone for Cicerina remanei Meixner, 1928 
Belgian Exclusive Economic Zone for Cicerina remanei Meixner, 1928 
Belgian Exclusive Economic Zone for Cicerina remanei Meixner, 1928 
Belgian Exclusive Economic Zone for Cicerina tetradactyla Giard, 1904 
Belgian Exclusive Economic Zone for Cicerina tetradactyla Giard, 1904 
Belgian Exclusive Economic Zone for Cicerina tetradactyla Giard, 1904 
Belgian Exclusive Economic Zone for Ciliopharyngiella constricta Martens & Schockaert, 1981 
Belgian Exclusive Economic Zone for Cirrifera Sopott, 1972 
Belgian Exclusive Economic Zone for Cirrifera Sopott, 1972 
Belgian Exclusive Economic Zone for Cirrifera Sopott, 1972 
Belgian Exclusive Economic Zone for Cirrifera aculeata (Ax, 1951) 
Belgian Exclusive Economic Zone for Cirrifera aculeata (Ax, 1951) 
Belgian Exclusive Economic Zone for Cirrifera aculeata (Ax, 1951) 
Belgian Exclusive Economic Zone for Cirrifera dumosa Sopott, 1972 
Belgian Exclusive Economic Zone for Coelogynopora axi Sopott, 1972 
Belgian Exclusive Economic Zone for Coelogynopora axi Sopott, 1972 
Belgian Exclusive Economic Zone for Coelogynopora axi Sopott, 1972 
Belgian Exclusive Economic Zone for Coelogynopora forcipis Sopott-Ehlers, 1976 
Belgian Exclusive Economic Zone for Coelogynopora forcipis Sopott-Ehlers, 1976 
Belgian Exclusive Economic Zone for Coelogynopora gynocotyla Steinböck, 1924 
Belgian Exclusive Economic Zone for Coelogynopora gynocotyla Steinböck, 1924 
Belgian Exclusive Economic Zone for Coelogynopora schultzii Meixner, 1938 
Belgian Exclusive Economic Zone for Coelogynopora schultzii Meixner, 1938 
Belgian Exclusive Economic Zone for Coelogynopora schulzei Meixner, 1938 
Belgian Exclusive Economic Zone for Coelogynopora schulzei Meixner, 1938 
Belgian Exclusive Economic Zone for Coelogynopora solifer Sopott, 1972 
Belgian Exclusive Economic Zone for Coelogynoporidarum 
Belgian Exclusive Economic Zone for Coronhelmis multispinosus Luther, 1948 
Belgian Exclusive Economic Zone for Coronhelmis multispinosus Luther, 1948 
Belgian Exclusive Economic Zone for Dalyellioidarum 
Belgian Exclusive Economic Zone for Dalyellioidarum 
Belgian Exclusive Economic Zone for Dalyellioidarum 
Belgian Exclusive Economic Zone for Diascorhynchus rubrus Boaden, 1963 
Belgian Exclusive Economic Zone for Diascorhynchus rubrus Boaden, 1963 
Belgian Exclusive Economic Zone for Diascorhynchus rubrus Boaden, 1963 
Belgian Exclusive Economic Zone for Diascorhynchus rubrus Boaden, 1963 
Belgian Exclusive Economic Zone for Diascorhynchus serpens Karling, 1949 
Belgian Exclusive Economic Zone for Doliopharynx geminocirro Ehlers, 1972 
Belgian Exclusive Economic Zone for Doliopharynx geminocirro Ehlers, 1972 
Belgian Exclusive Economic Zone for Duplominona septentrionalis Martens, 1983 
Belgian Exclusive Economic Zone for Duploperaclistus circocirrus Martens, 1983 
Belgian Exclusive Economic Zone for Gnathorhynchus conocaudatus Meixner, 1929 
Belgian Exclusive Economic Zone for Gnathorhynchus conocaudatus Meixner, 1929 

 Authority

 for Astrotorhynchus bifidus (McIntosh, 1874) Graff, 1905

(Mc Intosh, 1874) [details]

 Authority

 for Baicalellia brevituba (Luther, 1918) Nasonov, 1930

(Luther, 1921) [details]

 Authority

 for Cheliplana boadeni Schilke, 1970

Schilke, 1969 [details]

 Authority

 for Jensenia angulata (Jensen, 1878) Graff, 1882

(Jensen, 1878) [details]

 Authority

 for Leptoplana tremellaris (Müller OF, 1773)

(O.F. Müller, 1774) [details]

 Authority

 for Macrostomum hamatum Luther, 1947

Luther, 1949 [details]

 Authority

 for Monocelis fusca Örsted, 1843

Oerstedt, 1843 [details]

 Authority

 for Philactinoposthia saliens (Graff, 1882)

(von Graff, 1882) [details]

 Authority

 for Pogaina natans (Ax, 1951) Marcus, 1954

(Ax, 1951) [details]

 Authority

 for Promesostoma marmoratum (Schultze, 1851) Graff, 1882

(M. Schultze, 1851) [details]

 Authority

 for Pseudostomum gracilis Westblad, 1955

Westblad, 1954 [details]

 Authority

 for Vejdovskya pellucida (Schultze, 1851) Graff, 1905

(M. Schultze, 1851) [details]

 Spelling

 for Neoschizorhynchus brevipharyngeus Schilke, 1970

Often spelled as brevipharynggus [details]

 Spelling

 for Ptyalorhynchus coecus Ax, 1951

Often spelled as caecus [details]