Animalia
Accirinia Tshernyshev, 1993
Akrostomum Grube, 1840
Alardus Busch, 1851
Amniclineus Gibson & Qi Sang, 1991
Anopla Schultze, 1851
Aporocephala Wagner, 1885
Arhynchonemertidae
Ascaris Linnaeus, 1758
Avenardia Giard, 1878
Baicalonemertes Korotneff, 1901
Balanocephalus Kennel, 1891
Caninia Owen, 1846
Canininula Strand, 1928
Cephalonema Stimpson, 1857
Cephalotrix Oersted, 1844
Chasmocephala
Chlamydocephalus Diesing, 1850
Chloraima Koelliker, 1845
Cnidon Müller, 1854
Colpocephalus Diesing, 1850
Crandallia Härlin, 1998
Dicelis Stimpson, 1857
Dichilus Stimpson, 1857
Diplomma Stimpson, 1857
Emea Leidy, 1850
Enopla Schultze, 1851
Euoerstedtia Vaillant, 1890
Fasciola Müller, 1774
Gordiophis McIntosh, 1874
Gordius Slabber, 1769-78
Hecate Girard, 1852
Hemicyclia Ehrenberg, 1831
Hirudo Müller, 1788
Hyalonemertes Verrill, 1892
Koinoporus Sanchez & Moretto, 1988
Korotkevltschia Friedrich, 1968
Kosmocephala
Kurilonemertes Chernyshev, 1993
Langia Hubrecht, 1879
Leodes Girard, 1853
Leonoviana Tshernyshev, 1992
Linaria de Blainville, 1828
Lobilabrum de Blainville, 1828
Loxorrhochma Schmarda, 1859
Maena Gistl, 1847
Monopora Salensky, 1884
Naredopsis Verrill, 1892
Nematodemus Graff, 1896
Nemertus Mudie, 1840
Neonemertes Girard, 1893
Omatoplea Diesing, 1850
Ommatoplea Diesing, 1862
Ophiocephalus Blainville, 1828
Ophionemertes Verrill, 1874
Ophyocephalus Chiaje, 1829
Otohelicophora Envall, 1996
Otoloxorrhochma
Otoloxorrhocma Diesing, 1863
Pararhynchoscolex Czerniavsky, 1880
Parasitastes Gistl, 1848
Paroerstediella Chernyshev, 1993
Paroestedia Friedrich, 1955
Pilidium Müller, 1846
Polyhopla Diesing, 1862
Polystemma Ehrenberg, 1831
Poseidon Girard, 1852
Probalaenanernertes Brinkmann, 1917
Procarinina Bergendal, 1902
Procephalotrix
Proctochaeta Ehrenberg, 1834
Pseudonematon Hubrecht, 1883
Pseudonemertes Brinkmann, 1932
Ptychodes Diesing, 1863
Pylidium McIntosh, 1873
Quatrefagea Diesing, 1862
Renieria Girard, 1853
Scotia Leuckart, 1849
Serpentaria Goodsir, 1845
Sifoneutero Renier, 1828
Siphonenteron Meneghini, 1847
Siphonteron
Stimpsonia Girard, 1853
Stylus Johnston, 1865
Tatsnoskia Stimpson, 1857
Toeniosoma
Tubulans
Typhlonemertes Plessis, 1891
Valencia Quatrefages, 1846
Valenciennesia
Vermiculus Dalyell, 1853
Xenistum Blanchard, 1845
Yinia Sun Shichun & Lu Jingrang, 1998