Abyssoninoe Orensanz, 1990 (additional source)
Aora Krøyer, 1845 (additional source)
Aora typica Krøyer, 1845 (additional source)
Cellaria Ellis & Solander, 1786 (additional source)
Cypridina (Vargula) norvegica (Baird, 1860) accepted as Vargula norvegica (Baird, 1860) (additional source)
Eurycopidae Hansen, 1916 accepted as Eurycopinae Hansen, 1916 (additional source)
Exogone (Parexogone) longicirris (Webster & Benedict, 1844) accepted as Parexogone longicirris (Webster & Benedict, 1887) (additional source)
Fimbriosthenelais Pettibone, 1971 (additional source)
Fimbriosthenelais zetlandica (McIntosh, 1876) (additional source)
Glycera celtica O'Connor, 1987 (additional source)
Gyptis capensis (Day, 1963) accepted as Podarkeopsis capensis (Day, 1963) (basis of record)
Halecium Oken, 1815 (additional source)
Harmothoe (Harmothoe) ljungmani (Malmgren, 1867) accepted as Malmgrenia ljungmani (Malmgren, 1867) (source of synonymy)
Harmothoe fraserthomsoni McIntosh, 1897 (additional source)
Harmothoe marphysae McIntosh, 1876 accepted as Malmgrenia marphysae (McIntosh, 1876) (source of synonymy)
Hydrallmania Hincks, 1868 (additional source)
Ilyarachnidae Hansen, 1916 accepted as Ilyarachninae Hansen, 1916 (additional source)
Nemertesia antennina (Linnaeus, 1758) (additional source)
Nemertesia ramosa (Lamarck, 1816) (additional source)
Nymphon grossipes (Fabricius, 1780) (additional source)
Nymphonidae Wilson, 1878 (basis of record)
Obelia bidentata Clark, 1875 (additional source)
Opercularella lacerata (Johnston, 1847) (additional source)
Perigonimus repens (Wright, 1858) accepted as Leuckartiara octona (Fleming, 1823) (source of synonymy)
Plumularia Lamarck, 1816 (additional source)
Podarke pallida (Claparède, 1864) accepted as Oxydromus pallidus Claparède, 1864 (source of synonymy)
Polydora guillei Laubier & Ramos, 1974 accepted as Atherospio guillei (Laubier & Ramos, 1974) (additional source)
Prionospio malmgreni Claparède, 1868 (additional source)
Sertularella Gray, 1848 (additional source)
Sertularella gayi (Lamouroux, 1821) (additional source)
Sigalion squamosus Delle Chiaje, 1830 (additional source)
Sthenelais zetlandica McIntosh, 1876 accepted as Fimbriosthenelais zetlandica (McIntosh, 1876) (source of synonymy)
Syllis amica Quatrefages, 1866 (additional source)
Synelmis klatti (Friedrich, 1950) accepted as Glyphohesione klatti Friedrich, 1950 (source of synonymy)
Thracia gracilis Jeffreys, 1865 (additional source)
Vargula Skogsberg, 1920 (additional source)

English squirrel's tail for Sertularia argentea Linnaeus, 1758

 Synonymy

 for Kefersteinia cirrhata (Keferstein, 1862)

Synonymised with Psamathe fusca Johnston, 1836 [details]