Acrorhynchides robustus (Karling, 1931) Strand, 1928 (additional source)
Alexlutheria psammophila (basis of record)
Anthopharynx sacculipenis Ehlers, 1972 (additional source)
Archilina japonica Ax, 2008 (original description)
Archiloa westbladi Ax, 1954 accepted as Archiloa rivularis de Beauchamp, 1910 (source of synonymy)
Axiutelga aculeata (Ax, 1959) Karling, 1980 (additional source)
Baicalellia anchoragensis Ax & Armonies, 1990 (additional source)
Baicalellia brevituba accepted as Baicalellia brevitubus (Luther, 1918) Nasonov, 1930 (additional source)
Baicalellia canadensis Ax & Armonies, 1987 (additional source)
Baicalellia rectis (basis of record)
Balgetia semicirculifera Karling, 1962 (additional source)
Baltoplana magna Karling, 1949 (additional source)
Baltoplana valkanovi Ax, 1959 (additional source)
Beauchampiola canadiana (basis of record)
Beauchampiola mackfirae (basis of record)
Beklemischeviella angustior Luther, 1943 (additional source)
Beklemischeviella brevistyla Beklemischev, 1953 (status source)
Beklemischeviella contorta (Beklemischev, 1927) Luther, 1943 (additional source)
Brederveldia van der Velde & van de Winkel, 1975 (additional source)
Brederveldia bidentata Van Der Velde & Van De Winkel, 1975 (additional source)
Bresslauilla relicta Reisinger, 1929 (additional source)
Brinkmanniella macrostomoides Luther, 1948 (additional source)
Brunetia camarguensis (Brunet, 1965) Karling, 1980 (additional source)
Byrsophlebs dubia (Ax, 1956) Karling, 1985 (additional source)
Byrsophlebs simplex (Ax, 1959) Karling, 1985 (additional source)
Canetellia nana accepted as Baicalellia nana (Ax, 2008) Stephenson, Van Steenkiste & Leander, 2019 (basis of record)
Carcharodorhynchus subterraneus Meixner, 1938 (additional source)
Ceratopera falcata (Ax, 1953) Van Steenkiste & Leander, 2018 accepted as Messoplana falcata (Ax, 1953) Den Hartog, 1966 (additional source)
Ceratopera falcata falcata (Ax, 1953) Van Steenkiste & Leander, 2018 (additional source)
Ceratopera falcata valida (Ax, 1977) Van Steenkiste & Leander, 2018 (additional source)
Cheliplana deverticula (basis of record)
Cheliplana euxeinos Ax, 1959 (additional source)
Cheliplana setosa Evdonin, 1971 (additional source)
Cheliplana stylifera Karling, 1949 (additional source)
Cheliplana vestibularis de Beauchamp, 1927 (additional source)
Chlamydorhynchus evekuniensis Evdonin, 1977 (additional source)
Cicerina brevicirrus Meixner, 1928 (additional source)
Cicerina eucentrota Ax, 1959 (additional source)
Cicerina tetradactyla Giard, 1904 (additional source)
Clyporhynchus monolentis Karling, 1947 (additional source)
Coelogynopora bresslaui Steinböck, 1924 accepted as Coelogynopora sequana Sopott-Ehlers, 1992 (source of synonymy)
Coelogynopora coronata (basis of record)
Coelogynopora faeroernensis (basis of record)
Coronhelmis conspicuus Ax, 1994 (additional source)
Coronhelmis exiguus Ax, 1994 (additional source)
Coronhelmis inornatus Ehlers, 1974 (additional source)
Coronhelmis multispinosus Luther, 1948 (additional source)
Coronhelmis noerrevangi Ax, 1994 (additional source)
Coronhelmis subtilis (basis of record)
Coronhelmis tripartitus Ehlers, 1974 (additional source)
Coronhelmis urna Ax, 1954 (additional source)
Coronopharynx pusillus Luther, 1962 accepted as Baicalellia pusilla (Luther, 1962) Stephenson, Van Steenkiste & Leander, 2019 (additional source)
Cystiplana paradoxa Karling, 1964 (additional source)
Diascorhynchus caligatus Ax, 1959 (additional source)
Diascorhynchus lappvikensis Karling, 1963 (additional source)
Diascorhynchus serpens Karling, 1949 (additional source)
Djeziraia euxinica (Mack-Fira, 1971) Schockaert, 1982 (additional source)
Duplacrorhynchus major Schockaert & Karling, 1970 (additional source)
Duplominona filiformis (basis of record)
Duplominona japonica (basis of record)
Eldenia (basis of record)
Eldenia reducta (basis of record)
Gieysztoria expedita expeditoides Luther, 1955 accepted as Gieysztoria expeditoides Luther, 1955 (status source)
Gieysztoria expeditoides Luther, 1955 (status source)
Gieysztoria maritima Luther, 1955 (status source)
Gnathorhynchus conocaudatus Meixner, 1929 (additional source)
Gnathorhynchus krogeni Karling, 1947 (status source)
Gyratrix hermaphroditus Ehrenberg, 1831 (additional source)
Halammovortex promacropharynx (basis of record)
Halammovortex pseudonigrifrons (basis of record)
Halammovortex supranigrifrons (basis of record)
Haloplanella carolinensis (basis of record)
Haloplanella obtusituba Luther, 1946 (additional source)
Haplovejdovskya subterranea Ax, 1954 (additional source)
Hartogia pontica Mack-Fira, 1968 (additional source)
Itaipusa karlingi Mack-Fira, 1968 (additional source)
Itaipusa scotica (Karling, 1954) Karling, 1978 accepted as Reinhardorhynchus scoticus (Karling, 1954) Diez, Monnens & Artois, 2021 (additional source)
Kirgisella forcipata Beklemischev, 1927 accepted as Neokirgella forcipata (Beklemischev, 1927) Oswald, Makarkin, Tyler & Rogozin, 2010 (additional source)
Lutheriella diplostyla Hartog, 1966 (additional source)
Macrostomum acutum (basis of record)
Macrostomum bellebaruchae (basis of record)
Macrostomum calcaris (basis of record)
Macrostomum clavituba (basis of record)
Macrostomum flexum (basis of record)
Macrostomum gallicum (basis of record)
Macrostomum guttulatum (basis of record)
Macrostomum incurvatum (basis of record)
Macrostomum parthenopeum Beklemischev, 1951 accepted as Macrostomum rubrocinctum Ax, 1951 (source of synonymy)
Macrostomum rectum (basis of record)
Macrostomum semicirculatum (basis of record)
Macrostomum uncinatum (basis of record)
Maehrenthalia americana Ax & Armonies, 1990 (additional source)
Messoplana falcata (Ax, 1953) Den Hartog, 1966 (additional source)
Messoplana falcata falcata (Ax, 1953) Den Hartog, 1966 (additional source)
Messoplana falcata valida Ax, 1977 (additional source)
Minona minuta (basis of record)
Monocelopsis carolinensis Ax, 2008 (basis of record)
Neognathorhynchus lobatus (Ax, 1952) Karling, 1956 (additional source)
Odontorhynchus lonchiferus Karling, 1947 (additional source)
Palladia Evdonin, 1977 (additional source)

Alaska for Halammovortex promacropharynx 
Alaska for Halammovortex promacropharynx 
Baltic sea for Baicalellia brevituba 
Black Sea for Beauchampiola mackfirae 
Canada for Beauchampiola canadiana 
Canada for Halammovortex pseudonigrifrons 
Canada for Placorhynchus separatus 
Denmark for Canetellia nana 
Denmark for Canetellia nana 
Dutch Exclusive Economic Zone for Promesostoma rostratum Ax, 1951 
Faroe Islands for Archilopsis unipunctata (Fabricius, 1826) 
Faroe Islands for Archilopsis unipunctata (Fabricius, 1826) 
Faroe Islands for Archilopsis unipunctata (Fabricius, 1826) 
Faroe Islands for Beklemischeviella contorta (Beklemischev, 1927) Luther, 1943 
Faroe Islands for Coelogynopora biarmata Steinböck, 1924 
Faroe Islands for Coelogynopora coronata 
Faroe Islands for Coelogynopora faeroernensis 
Faroe Islands for Coelogynopora faeroernensis 
Faroe Islands for Coelogynopora faeroernensis 
Faroe Islands for Coelogynopora gynocotyla Steinböck, 1924 
Faroe Islands for Coronhelmis lutheri Ax, 1951 
Faroe Islands for Itaspiella helgolandica (Meixner, 1938) 
Faroe Islands for Itaspiella helgolandica (Meixner, 1938) 
Faroe Islands for Macrostomum balticum Luther, 1947 
Faroe Islands for Macrostomum distinguendum Papi, 1951 
Faroe Islands for Placorhynchus echinulatus Karling, 1947 
Faroe Islands for Provortex impeditus 
Faroe Islands for Provortex impeditus 
Faroe Islands for Provortex impeditus 
Faroe Islands for Provortex karlingi Ax, 1951 
Faroe Islands for Provortex karlingi Ax, 1951 
Faroe Islands for Provortex karlingi Ax, 1951 
Faroe Islands for Provortex pallidus Luther, 1948 
Faroe Islands for Provortex pallidus Luther, 1948 
Faroe Islands for Stygoplanellina saksunensis 
Finland for Beklemischeviella angustior Luther, 1943 
Finland for Beklemischeviella angustior Luther, 1943 
Finland for Ptychopera spinifera Den Hartog, 1966 
Finnish Exclusive Economic Zone for Balgetia hyalina Karling, 1962 
Finnish Exclusive Economic Zone for Macrostomum rectum 
Finnish Exclusive Economic Zone for Provortex balticus (Schultze, 1851) Graff, 1882 
France for Allostoma catinosum (Beklemischev, 1927) Mack Fira, 1974 
France for Archiloa petiti Ax, 1956 
France for Axiutelga aculeata (Ax, 1959) Karling, 1980 
France for Baicalellia rectis 
France for Balgetia hyalina Karling, 1962 
France for Cheliplana deverticula 
France for Cheliplana deverticula 
France for Cicerina brevicirrus Meixner, 1928 
France for Halammovortex macropharynx (Meixner, 1938) Karling, 1943 
France for Halammovortex macropharynx (Meixner, 1938) Karling, 1943 
France for Haloplanella minuta Luther, 1946 
France for Haloplanella minuta Luther, 1946 
France for Macrostomum balticum Luther, 1947 
France for Macrostomum balticum Luther, 1947 
France for Macrostomum clavituba 
France for Macrostomum gallicum 
France for Macrostomum incurvatum 
France for Macrostomum spirale Ax, 1956 
France for Paromalostomum mediterraneum Ax, 1955 
France for Paromalostomum mediterraneum Ax, 1955 
France for Phonorhynchoides haegheni Artois & Schockaert, 2001 
France for Phonorhynchus bitubatus Meixner, 1938 
France for Placorhynchus dimorphis Karling, 1947 
France for Placorhynchus octaculeatus octaculeatus Karling, 1931 
France for Promesostoma caligulatum Ax, 1952 
France for Promesostoma caligulatum Ax, 1952 
France for Promesostoma caligulatum Ax, 1952 
France for Promesostoma caligulatum Ax, 1952 
France for Promesostoma rostratum Ax, 1951 
France for Promonotus schultzei Meixner, 1943 
France for Proschizorhynchus gullmarensis Karling, 1950 
France for Provortex psammophilus Ax, 1951 
France for Selimia vivida Ax, 1959 
France for Thylacorhynchus macrorhynchos 
France for Thylacorhynchus macrorhynchos 
France for Thylacorhynchus macrorhynchos 
France for Uncinorhynchus flavidus Karling, 1947 
France for Uncinorhynchus flavidus Karling, 1947 
France for Uncinorhynchus flavidus Karling, 1947 
France for Vejdovskya helictos Ax, 1956 
France for Zonorhynchus tvaerminnensis (Karling, 1931) Karling, 1952 
Germany for Baicalellia brevituba 
Germany for Balgetia hyalina Karling, 1962 
Germany for Balgetia semicirculifera Karling, 1962 
Germany for Canetellia nana 
Germany for Canetellia nana 
Germany for Canetellia nana 
Germany for Canetellia nana 
Germany for Cicerina tetradactyla Giard, 1904 
Germany for Coronhelmis multispinosus Luther, 1948 
Germany for Eldenia 
Germany for Eldenia 
Germany for Eldenia reducta 
Germany for Eldenia reducta 
Germany for Haplovejdovskya subterranea Ax, 1954 
Germany for Macrostomum distinguendum Papi, 1951 
Germany for Macrostomum spirale Ax, 1956 
Germany for Messoplana falcata falcata (Ax, 1953) Den Hartog, 1966 
Germany for Messoplana falcata falcata (Ax, 1953) Den Hartog, 1966 

 Status

 for Anthopharynx sacculipenis Ehlers, 1972

Several authors (Armonies, 1987; Hellwig, 1987; Ax, 2008) cast doubts on the identity of this species, and suggest it could ... [details]

 Synonymy

 for Coronhelmis urna Ax, 1954

C. urna was considered a synonym of C. lutheri by Luther (1962), followed by Ehlers (1974). Ax (2008) discusses the ... [details]

 Taxonomic remark

 for Selimia similis Ax, 1959

According to Ax (2008) S. vivida and S. similis could be identical (see Ax, 2008: p. 626) [details]