Abyssoninoe Orensanz, 1990 (additional source)
Actinia Linnaeus, 1767 (additional source)
Aglaophenia Lamouroux, 1812 (additional source)
Aora Krøyer, 1845 (additional source)
Aora typica Krøyer, 1845 (additional source)
Arachnida (basis of record)
Brachyscelidae Stephensen, 1923 (additional source)
Cellaria Ellis & Solander, 1786 (additional source)
Chalinidae Gray, 1867 (additional source)
Daptonema oxycerca (de Man, 1888) Lorenzen, 1977 (additional source)
Diaixidae Sars G.O., 1902 (additional source)
Diaixis Sars G.O., 1902 (additional source)
Diaixis hibernica (Scott A., 1896) (additional source)
Eumida fusigera (Malmgren, 1865) accepted as Sige fusigera Malmgren, 1865 (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)
Garveia nutans Wright, 1859 (additional source)
Glycera celtica O'Connor, 1987 (additional source)
Halecium Oken, 1815 (additional source)
Haliclona indistincta (Bowerbank, 1866) represented as Haliclona (Rhizoniera) indistincta (Bowerbank, 1866) (additional source)
Harmothoe fraserthomsoni McIntosh, 1897 (additional source)
Harmothoe marphysae McIntosh, 1876 accepted as Malmgrenia marphysae (McIntosh, 1876) (source of synonymy)
Harmothoe zetlandica (McIntosh, 1876) accepted as Malmgreniella ljungmani (Malmgren, 1867) accepted as Malmgrenia ljungmani (Malmgren, 1867) (source of synonymy)
Hydrallmania Hincks, 1868 (additional source)
Ilyarachna hirticeps G. O. Sars, 1870 (additional source)
Kirchenpaueria pinnata (Linnaeus, 1758) (additional source)
Nannastacus longirostris G.O. Sars, 1879 (basis of record)
Nemertesia antennina (Linnaeus, 1758) (additional source)
Nemertesia ramosa (Lamarck, 1816) (additional source)
Nymphon brevitarse Krøyer, 1844 (additional source)
Nymphon grossipes (Fabricius, 1780) (additional source)
Nymphon longimanum Sars, 1888 (additional source)
Nymphon longitarse Krøyer, 1844 (additional source)
Nymphon stroemi Krøyer, 1844 (additional source)
Nymphon tenellum (Sars, 1888) (additional source)
Nymphonidae Wilson, 1878 (basis of record)
Obelia bidentata Clark, 1875 (additional source)
Oceanapia isodictyiformis (Carter, 1882) (additional source)
Opercularella lacerata (Johnston, 1847) (additional source)
Pandea Lesson, 1843 (additional source)
Pherusina Norman, 1888 accepted as Aclis Lovén, 1846 (basis of record)
Plagioselmis Butcher ex G.Novarino, I.A.N.Lucas & S.Morrall, 1994 (additional source)
Plumularia Lamarck, 1816 (additional source)
Podarke pallida (Claparède, 1864) accepted as Oxydromus pallidus Claparède, 1864 (source of synonymy)
Podocoryna M. Sars, 1846 (additional source)
Podocoryna areolata (Alder, 1862) (additional source)
Polydora guillei Laubier & Ramos, 1974 accepted as Atherospio guillei (Laubier & Ramos, 1974) (additional source)
Polydora saintjosephi Eliason, 1920 accepted as Dipolydora saintjosephi (Eliason, 1920) (source of synonymy)
Polyplumaria frutescens (Ellis & Solander, 1786) accepted as Schizotricha frutescens (Ellis & Solander, 1786) (basis of record)
Polyplumaria frutescens (Ellis & Solander, 1786) accepted as Schizotricha frutescens (Ellis & Solander, 1786) (source of synonymy)
Prionospio malmgreni Claparède, 1868 (additional source)
Schizotricha frutescens (Ellis & Solander, 1786) (additional source)
Selaginopsis Allman, 1876 accepted as Thuiaria Fleming, 1828 (additional source)
Sertularella Gray, 1848 (additional source)
Sertularella gayi (Lamouroux, 1821) (additional source)
Sertularia argentea Linnaeus, 1758 (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)
Symplectoscyphus Marktanner-Turneretscher, 1890 (additional source)
Tamarisca Kudelin, 1914 (additional source)
Tharyx vivipara Christie, 1984 accepted as Chaetozone vivipara (Christie, 1984) (source of synonymy)
Thracia gracilis Jeffreys, 1865 (additional source)
Thuiaria Fleming, 1828 (additional source)
Thuiaria thuja (Linnaeus, 1758) (additional source)
Tridentata Stechow, 1920 (basis of record)
Tridentata distans (Lamouroux, 1816) accepted as Amphisbetia distans (Lamouroux, 1816) (basis of record)
Ulota Mohr in Brid., 1819 (basis of record)
Ulota phyllantha Brid., 1819 (basis of record)
Xanthocalanus Giesbrecht, 1893 (additional source)
Zanclea costata Gegenbaur, 1857 (additional source)

English squirrel's tail for Sertularia argentea Linnaeus, 1758