Amphiporidae Oersted, 1844 (basis of record)
Amphiporus Ehrenberg, 1831 (basis of record)
Baseodiscus Diesing, 1850 (basis of record)
Baseodiscus delineatus (Delle Chiaje, 1822) (basis of record)
Callinera Bergendal, 1900 (basis of record)
Carcinonemertes Coe, 1902 (basis of record)
Carcinonemertidae Sumner, Osburn & Cole, 1913 (basis of record)
Carinesta Punnett, 1900 (basis of record)
Carinina Hubrecht, 1885 (basis of record)
Cephalothricidae accepted as Cephalotrichidae McIntosh, 1873-1874 (basis of record)
Cephalothrix Örsted, 1843 (basis of record)
Cephalotrichella Wijnhoff, 1913 (basis of record)
Cerebratulus [Renier], [1804] (basis of record)
Cratenemertidae Friedrich, 1968 (basis of record)
Emplectonema gracile (Johnston, 1837) (basis of record)
Emplectonematidae Bürger, 1904 (basis of record)
Heteronemertea (basis of record)
Hoplonemertea (basis of record)
Hubrechtella Bergendal, 1902 (basis of record)
Hubrechtiidae Bürger, 1892 (basis of record)
Lineidae McIntosh, 1873-1874 (basis of record)
Lineus Sowerby, 1806 (basis of record)
Lineus bilineatus (Renier, 1804) accepted as Siphonenteron bilineatum Meneghini in Renier, 1847 (basis of record)
Micrura Ehrenberg, 1828 (basis of record)
Monostilifera (basis of record)
Nipponnemertes Friedrich, 1968 accepted as Nipponnemertes Gibson & Crandall, 1989 (basis of record)
Notospermus Huschke, 1829 (basis of record)
Notospermus geniculatus (Delle Chiaje, 1822) (basis of record)
Palaeonemertea (basis of record)
Prosorhochmidae Bürger, 1895 (basis of record)
Tetrastemma Ehrenberg, 1831 (basis of record)
Tetrastemmatidae Hubrecht, 1879 (basis of record)
Tubulanidae Bürger, 1905 (basis of record)
Tubulanus Renier, 1804 (basis of record)
Valenciniidae Hubrecht, 1879 (basis of record)
Zygonemertes Montgomery, 1897 (basis of record)