Amphiporidae Oersted, 1844 (basis of record)
Amphiporus Ehrenberg, 1831 (basis of record)
Armaueriidae Brinkmann, 1917 (basis of record)
Balaenanemertidae (basis of record)
Baseodiscus Diesing, 1850 (basis of record)
Buergeriellidae Brinkmann, 1917 (basis of record)
Cerebratulidae accepted as Lineidae (basis of record)
Cerebratulus Renier, 1804 (basis of record)
Chuniellidae Brinkmann, 1917 (basis of record)
Crassonemertes Brinkmann, 1917 (basis of record)
Crassonemertes robusta Brinkmann, 1917 (basis of record)
Dinonemertes Laidlaw, 1906 (basis of record)
Dinonemertes alberti (Joubin, 1906) (basis of record)
Dinonemertidae Brinkmann, 1917 (basis of record)
Emplectonematidae Bürger, 1904 (basis of record)
Heteronemertea (basis of record)
Hoplonemertea (basis of record)
Lineidae (basis of record)
Lineus Sowerby, 1806 (basis of record)
Micrura Ehrenberg, 1828 (basis of record)
Micrura pardalis Haddon, 1886 (basis of record)
Monostilifera (basis of record)
Nectonemertes Verrill, 1892 (basis of record)
Nectonemertes mirabilis Verrill, 1892 (basis of record)
Nectonemertidae Verrill, 1892 (basis of record)
Palaeonemertea (basis of record)
Pelagica (basis of record)
Pelagonemertidae (basis of record)
Phallonemertes Brinkmann, 1917 (basis of record)
Phallonemertes murrayi (Brinkmann, 1912) (basis of record)
Phallonemertidae Brinkmann, 1917 (basis of record)
Planktonemertidae Brinkmann, 1917 (basis of record)
Plotonemertes Brinkmann, 1917 (basis of record)
Plotonemertes adhaerens Brinkmann, 1917 (basis of record)
Polystilifera (basis of record)
Protopelagonemertes Brinkmann, 1917 (basis of record)
Protopelagonemertes hubrechti (Brinkmann, 1917) (basis of record)
Protopelagonemertidae (basis of record)
Tetrastemma Ehrenberg, 1831 (basis of record)
Tetrastemmatidae Hubrecht, 1879 (basis of record)
Tubulanidae (basis of record)
Tubulanus Renier, 1804 (basis of record)
Tubulanus polymorphus Renier, 1804 (basis of record)
Valenciniidae Hubrecht, 1879 (basis of record)

Arctic Ocean for Dinonemertes alberti (Joubin, 1906) 
European waters (ERMS scope) for Crassonemertes robusta Brinkmann, 1917 
European waters (ERMS scope) for Dinonemertes alberti (Joubin, 1906) 
European waters (ERMS scope) for Micrura pardalis Haddon, 1886 
European waters (ERMS scope) for Nectonemertes mirabilis Verrill, 1892 
European waters (ERMS scope) for Phallonemertes murrayi (Brinkmann, 1912) 
European waters (ERMS scope) for Plotonemertes adhaerens Brinkmann, 1917 
European waters (ERMS scope) for Protopelagonemertes hubrechti (Brinkmann, 1917) 
European waters (ERMS scope) for Tubulanus polymorphus Renier, 1804 

 Authority

 for Tetrastemma robertianae McIntosh, 1874

Also mentioned as McIntosh, 1873/74 [details]

 Ecology

 for Carcinonemertes carcinophila (Kölliker, 1845)

on gills and eggs of crabs [details]

 Ecology

 for Emplectonema spongicola (Bergendal, 1903)

in sponges [details]

 Ecology

 for Gononemertes parasita Bergendal, 1900

in tunicates [details]

 Ecology

 for Malacobdella grossa (Müller, 1776)

in mantle cavity of bivalve molluscs [details]

 Ecology

 for Tetrastemma marionis Joubin, 1890

in ascidians [details]

 Ecology

 for Tetrastemma quadristriatum Langerhans, 1880

in ascidians [details]

 Ecology

 for Tetrastemma vittigerum (Bürger, 1904)

in ascidians [details]

 Habitat

 for Amphiporella baltica Friedrich, 1940

interstitial [details]

 Habitat

 for Balaenanemertes lobata (Joubin, 1906)

meso-bathypelagic [details]

 Habitat

 for Prosorhochmus claparedii Keferstein, 1862

mostly interstitial [details]

 Remark

 for Cryptonemertes actinophila (Bürger, 1904)

under pedal disc of sea anemones [details]

 Synonymy

 for Drepanophorus crassus nisidensis

Drepanophorus crassus nisidensis (partim) = Paradrepanophorus crassus [details]

 Synonymy

 for Tetrastemma stimpsoni Chernyshev, 1992

Prostoma stigmatum (partim) = Tetrastemma stimpsoni Tetrastemma stigmatum sensu Kulikova, 1988 = Tetrastemma ... [details]

 Taxonomy

 for Carinesta anglica Wijnhoff, 1912

Dubious species [details]

 Taxonomy

 for Cerebratulus barentsi Bürger, 1895

Dubious species [details]

 Taxonomy

 for Cerebratulus bivittatus Uljanin, 1870

Dubious species [details]

 Taxonomy

 for Cerebratulus croceus Grube, 1864

Dubious species [details]

 Taxonomy

 for Cerebratulus depressus Quatrefages, 1846

Dubious species [details]

 Taxonomy

 for Cerebratulus erythrorochma Joubin, 1902

Dubious species [details]

 Taxonomy

 for Emplectonema duoni (Joubin, 1890)

Dubious species [details]

 Taxonomy

 for Emplectonema marioni (Hubrecht, 1879)

Dubious species [details]

 Taxonomy

 for Lineus hubrechti (Langerhans, 1880)

Dubious species [details]

 Taxonomy

 for Micrura albifrons Timofeeva, 1912

Dubious species [details]

 Taxonomy

 for Micrura rockalliensis Dollfus, 1924

Dubious species [details]

 Taxonomy

 for Micrura scotica Stephenson, 1911

Dubious species [details]

 Taxonomy

 for Nemertopsis capitulata Timofeeva, 1912

Dubious species [details]

 Taxonomy

 for Nemertoscolex parasiticus Greeff, 1879

probably endoparasitic in echiuroids [details]

 Taxonomy

 for Oerstedia immutabilis (Riches, 1893)

Dubious species [details]

 Taxonomy

 for Oerstedia nigra (Riches, 1893)

Dubious species [details]

 Validity

 for Tetrastemma albicollis

Uncertainty about the Genusname [details]