Amphiporella Friedrich, 1939 accepted as Germanemertes Kajihara, 2021 (status source)
Amphiporella baltica Friedrich, 1939 accepted as Germanemertes baltica (Friedrich, 1939) (status source)
Amphiporus appendiculatus Friedrich, 1957 (status source)
Amphiporus arcticus Punnett, 1901 (status source)
Amphiporus carinelloides Bürger, 1895 (basis of record)
Amphiporus dubius Hubrecht, 1879 (basis of record)
Amphiporus fabricii Levinsen, 1879 (basis of record)
Amphiporus flavens Monastero, 1930 (basis of record)
Amphiporus giardinae Monastero, 1930 (basis of record)
Amphiporus groenlandicus Örsted, 1843 (basis of record)
Amphiporus hastatus McIntosh, 1874 (basis of record)
Amphiporus islandicus Friedrich, 1957 (status source)
Amphiporus julii Giard, 1890 (basis of record)
Amphiporus langiaegeminus Bürger, 1895 (basis of record)
Amphiporus marmoratus Hubrecht, 1879 (basis of record)
Amphiporus martyi Oxner, 1907 (basis of record)
Amphiporus murmanicum Ushakov, 1928 (basis of record)
Amphiporus nigrostriatus Timofeev, 1911 (status source)
Amphiporus oligommatus Bürger, 1895 (basis of record)
Amphiporus polyommatus Bürger, 1895 (basis of record)
Amphiporus pugnax Hubrecht, 1879 (basis of record)
Amphiporus punnetti (Friedrich, 1957) (status source)
Amphiporus reticulatus Bürger, 1895 (basis of record)
Amphiporus rufostriatus Bergendal, 1903 (basis of record)
Amphiporus septentrionalis Friedrich, 1957 (status source)
Amphiporus sipunculus Saint-Loup, 1886 (basis of record)
Amphiporus thompsoni Punnett, 1901 (basis of record)
Amphiporus validissimus Bürger, 1895 (basis of record)
Amphiporus virgatus Bürger, 1895 (basis of record)
Amphiporus vitae Monastero, 1930 (basis of record)
Astemma longum Örsted, 1843 accepted as Cephalothrix linearis (Rathke, 1799) (basis of record)
Avenardia priei Giard, 1878 accepted as Cerebratulus marginatus [Renier], [1804] (basis of record)
Balaenanemertes grandis Brinkmann, 1917 (basis of record)
Balaenanemertes hjorti Brinkmann, 1917 (basis of record)
Balaenanemertes lata Brinkmann, 1917 (basis of record)
Balaenanemertes musculocaudata Brinkmann, 1917 (basis of record)
Borlasia cephalothrix Diesing, 1850 accepted as Cephalothrix linearis (Rathke, 1799) (basis of record)
Buergeriella notabilis Brinkmann, 1917 (basis of record)
Callinera buergeri Bergendal, 1900 (basis of record)
Carinella albida Bürger, 1892 accepted as Tubulanus linearis (McIntosh, 1874) (basis of record)
Carinella aragoi Joubin, 1890 accepted as Tubulanus annulatus (Montagu, 1804) (basis of record)
Carinella banyulensis Joubin, 1890 accepted as Tubulanus banyulensis (Joubin, 1890) (basis of record)
Carinella groenlandica Bergendal, 1902 accepted as Tubulanus groenlandicus (Bergendal, 1902) (basis of record)
Carinella inexpectata Hubrecht, 1880 accepted as Tubulanus inexpectatus (Hubrecht, 1880) (basis of record)
Carinella mcintoshii Bürger, 1892 accepted as Tubulanus annulatus (Montagu, 1804) (basis of record)
Carinella speciosa Coe, 1901 accepted as Tubulanus polymorphus [Renier], [1804] (basis of record)
Carinella théeli Bergendal, 1902 accepted as Protubulanus theeli (Bergendal, 1902) (basis of record)
Carinella trilineata Johnston, 1833 accepted as Tubulanus annulatus (Montagu, 1804) (basis of record)
Cephalothrix caeca Orsted, 1843 accepted as Cephalothrix linearis (Rathke, 1799) (basis of record)
Cephalothrix fragilis Bürger, 1892 accepted as Cephalotrichella signata (Hubrecht, 1879) (basis of record)
Cephalothrix galatheae Dieck, 1874 (basis of record)
Cephalothrix lineata Claparède, 1862 (status source)
Cephalothrix ocellata Keferstein, 1862 accepted as Cephalothrix rufifrons (Johnston, 1837) (basis of record)
Cerebratulus angulosus Haddon, 1886 accepted as Cerebratulus marginatus [Renier], [1804] (basis of record)
Cerebratulus bivittatus Ulyanina, 1870 (basis of record)
Cerebratulus eisigii Hubrecht, 1880 (basis of record)
Cerebratulus grandis Jensen, 1878 accepted as Cerebratulus marginatus [Renier], [1804] (basis of record)
Cerebratulus liguricus Blanchard, 1849 (basis of record)
Cerebratulus simulans Bürger, 1892 (basis of record)
Cerebratulus spraguei Girard, 1893 accepted as Cerebratulus marginatus [Renier], [1804] (basis of record)
Chuniella lanceolata Brinkmann, 1917 (basis of record)
Drepanophorus rubrostriatus Hubrecht, 1875 (basis of record)
Gononemertes parasita Bergendal, 1900 (additional source)
Gordius annulatus Montagu, 1804 accepted as Tubulanus annulatus (Montagu, 1804) (basis of record)
Gurjanovella littoralis Ushakov, 1926 (additional source)
Lineus coccinus Bürger, 1892 (basis of record)
Lineus gilbus Bürger, 1892 (basis of record)
Lineus kennelii Bürger, 1892 (basis of record)
Meckelia ingens Leidy, 1855 accepted as Cerebratulus lacteus (Leidy, 1851) (basis of record)
Meckelia lactea Leidy, 1851 accepted as Cerebratulus lacteus (Leidy, 1851) (basis of record)
Meckelia leuckarti Diesing, 1862 accepted as Cerebratulus annellatus (Leuckart, 1849) (basis of record)
Meckelia lizziae Girard, 1853 accepted as Cerebratulus lacteus (Leidy, 1851) (basis of record)
Meckelia pocohontas Girard, 1853 accepted as Cerebratulus lacteus (Leidy, 1851) (basis of record)
Meckelia urticans Müller, 1854 accepted as Cerebratulus urticans (Müller, 1854) (basis of record)
Micrura fasciolata Ehrenberg, 1828 (basis of record)
Natonemertes acutocaudata Brinkmann, 1917 (basis of record)
Nemertes annellata Leuckart, 1849 accepted as Cerebratulus annellatus (Leuckart, 1849) (basis of record)
Nemertes complanatus Kölliker, 1845 accepted as Cerebratulus complanatus (Kölliker, 1845) (basis of record)
Nemertes rufifrons Johnston, 1837 accepted as Cephalothrix rufifrons (Johnston, 1837) (basis of record)
Nemertes superbus Kölliker, 1845 accepted as Tubulanus superbus (Kölliker, 1845) (basis of record)
Oerstedia laminariae Friedrich, 1936 (basis of record)
Ototyphlonemertes duplex Bürger, 1895 represented as Ototyphlonemertes (Ototyphlonemertes) duplex Bürger, 1895 (basis of record)
Parabalaenanemertes fusca Brinkmann, 1917 (basis of record)
Paralineus elisabethae Schütz, 1911 (basis of record)
Pendonemertes levinseni Brinkmann, 1917 (basis of record)
Polia crucigera Delle Chaije, 1844 accepted as Tubulanus annulatus (Montagu, 1804) (basis of record)
Poliopsis lacazei Joubin, 1890 (basis of record)
Prosorhochmus claparedii Keferstein, 1862 (additional source)
Prostoma Dugès, 1828 (status source)
Prostoma puteale Beauchamp, 1932 (basis of record)
Ramphogordius lacteus Rathke, 1843 accepted as Lineus lacteus (Rathke, 1843) (basis of record)
Tetrastemma ambiguum Riches, 1893 (basis of record)
Tetrastemma arctica Ushakov, 1926 accepted as Arctostemma arcticum (Ushakov, 1926) (additional source)
Tetrastemma assimile Örsted, 1844 (basis of record)
Tetrastemma bioculatum Örsted, 1843 (basis of record)
Tetrastemma buxeum Bürger, 1895 (basis of record)
Tetrastemma cephalophorum Bürger, 1895 (basis of record)
Tetrastemma cerasinum Bürger, 1895 (basis of record)
Tetrastemma diadema Hubrecht, 1879 (basis of record)
Tetrastemma dubium Örsted, 1845 (basis of record)