Acicula Renier, 1807 (verified source for family)
Acrostomum Oersted, 1843 (verified source for family)
Bathynemertes Laidlaw, 1906 (verified source for family)
Cephalonema Stimpson, 1857 (verified source for family)
Chloraema Agassiz, 1846 accepted as Chloraima Kölliker, 1845 (verified source for family)
Chloraima Kölliker, 1845 (verified source for family)
Diplomma Stimpson, 1857 (verified source for family)
Fasciola Müller, 1774 accepted as Fasciola Linnaeus, 1758 (verified source for family)
Hecate Girard, 1852 (verified source for family)
Hyalonemertes Verrill, 1892 (verified source for family)
Kosmocephala (verified source for family)
Langia Hubrecht, 1879 (verified source for family)
Leodes Girard, 1853 (verified source for family)
Lobilabrum de Blainville, 1828 (verified source for family)
Loxorrhochma Schmarda, 1859 (verified source for family)
Loxorrochma Schmarda, 1859 accepted as Loxorrhochma Schmarda, 1859 (verified source for family)
Monopora Salensky, 1884 (verified source for family)
Nematodemus Graff, 1896 (verified source for family)
Omatoplea Diesing, 1850 (verified source for family)
Ophionemertes Verrill, 1874 (verified source for family)
Otoloxorrhochma (verified source for family)
Polystemma Ehrenberg, 1828 (verified source for family)
Polystomma Gervais, 1849 accepted as Polystemma Ehrenberg, 1828 (verified source for family)
Poseidon Girard, 1852 (verified source for family)
Ptychodes Diesing, 1863 (verified source for family)
Quatrefagea Diesing, 1862 (verified source for family)
Reniera Bürger, 1895 accepted as Renieria Girard, 1853 (verified source for family)
Renieria Girard, 1853 (verified source for family)
Scotia Leuckart, 1849 (verified source for family)
Serpentaria Goodsir, 1845 (verified source for family)
Siphonteron (verified source for family)
Stimpsonia Girard, 1853 (verified source for family)
Stylus Johnston, 1865 (verified source for family)
Tatsnoskia Stimpson, 1857 (verified source for family)
Toeniosoma (verified source for family)
Tubulans (verified source for family)
Typhlonemertes Plessis, 1891 (verified source for family)
Vermiculus Dalyell, 1853 (verified source for family)
Xenistum Blanchard, 1845 (verified source for family)