Abyssoninoe Orensanz, 1990 (additional source)
Acanthotrochus Danielssen & Koren, 1881 (additional source)
Acanthotrochus mirabilis Danielssen & Koren, 1881 (additional source)
Actinia Linnaeus, 1767 (additional source)
Aglaophenia Lamouroux, 1812 (additional source)
Aglaophenia pluma (Linnaeus, 1758) (additional source)
Allantis Hérouard, 1902 accepted as Mesothuria Ludwig, 1894 (additional source)
Amphilepis Ljungman, 1867 (additional source)
Amphilepis norvegica (Ljungman, 1865) (additional source)
Amphipholis Ljungman, 1866 (additional source)
Amphipholis squamata (Delle Chiaje, 1828) (additional source)
Amphiura (Ophiopeltis) securigera (Düben & Koren, 1846) (additional source)
Amphiura borealis (G.O. Sars, 1872) (additional source)
Amphiura chiajei Forbes, 1843 (additional source)
Amphiura denticulata Koehler, 1896 accepted as Amphiura fragilis Verrill, 1885 (additional source)
Amphiura filiformis (O.F. Müller, 1776) (additional source)
Amphiura fragilis Verrill, 1885 (additional source)
Amphiura griegi Mortensen, 1920 (additional source)
Amphiura incana Lyman, 1879 represented as Amphiura (Amphiura) incana Lyman, 1879 (additional source)
Anseropoda Nardo, 1834 (additional source)
Anseropoda placenta (Pennant, 1777) (additional source)
Antedon de Fréminville, 1811 (additional source)
Antedon bifida (Pennant, 1777) (additional source)
Antedon petasus (Düben & Koren, 1846) (additional source)
Antedonidae Norman, 1865 (additional source)
Aora Krøyer, 1845 (additional source)
Aora typica Krøyer, 1845 (additional source)
Arachnida (basis of record)
Asterina Nardo, 1834 (additional source)
Asterina gibbosa (Pennant, 1777) (additional source)
Asterina phylactica Emson & Crump, 1979 (additional source)
Asteronyx Müller & Troschel, 1842 (additional source)
Asteronyx loveni Müller & Troschel, 1842 (additional source)
Asteropseidae Hotchkiss & Clark, 1976 (basis of record)
Astropecten Gray, 1840 (additional source)
Astropecten irregularis (Pennant, 1777) (additional source)
Bathybiaster Danielssen & Koren, 1883 (additional source)
Bathybiaster vexillifer (Wyville Thomson, 1873) (additional source)
Bathycrinidae Bather, 1899 (additional source)
Bathycrinus Thomson, 1872 (additional source)
Bathycrinus carpenterii (Danielssen & Koren, 1877) (additional source)
Bathyplotes Östergren, 1896 (additional source)
Bathyplotes natans (M. Sars, 1868) (additional source)
Benthogone Koehler, 1895 (additional source)
Benthopectinidae Verrill, 1899 (additional source)
Brachyscelidae Stephensen, 1923 (additional source)
Brissopsis L. Agassiz, 1840 (additional source)
Brissopsis lyrifera (Forbes, 1841) (additional source)
Cellaria Ellis & Solander, 1786 (additional source)
Ceramaster Verrill, 1899 (additional source)
Ceramaster granularis (Retzius, 1783) (additional source)
Chalinidae Gray, 1867 (additional source)
Cheiraster Studer, 1883 (additional source)
Cheiraster (Cheiraster) sepitus (Verrill, 1885) (additional source)
Crossaster Müller & Troschel, 1840 (additional source)
Crossaster papposus (Linnaeus, 1767) (additional source)
Crossaster squamatus (Döderlein, 1900) (additional source)
Ctenodiscus Müller & Troschel, 1842 (additional source)
Ctenodiscus crispatus (Bruzelius, 1805) (additional source)
Dactylochirotida accepted as Dendrochirotida (additional source)
Daptonema oxycerca (de Man, 1888) (additional source)
Dendrochirotida (additional source)
Diaixidae Sars G.O., 1902 (additional source)
Diaixis Sars G.O., 1902 (additional source)
Diaixis hibernica (Scott A., 1896) (additional source)
Dynamena Lamouroux, 1812 (additional source)
Echinaster Müller & Troschel, 1840 (additional source)
Echinaster (Echinaster) sepositus (Retzius, 1783) (additional source)
Echinocardium Gray, 1825 (additional source)
Echinocardium cordatum (Pennant, 1777) (additional source)
Echinocardium flavescens (O.F. Müller, 1776) (additional source)
Echinocardium pennatifidum Norman, 1868 (additional source)
Echinocucumis M. Sars, 1859 (additional source)
Echinocucumis hispida (Barrett, 1857) (additional source)
Echinocyamus van Phelsum, 1774 (additional source)
Echinocyamus pusillus (O.F. Müller, 1776) (additional source)
Echinus Linnaeus, 1758 (additional source)
Echinus acutus Lamarck, 1816 accepted as Gracilechinus acutus (Lamarck, 1816) (additional source)
Echinus alexandri Danielssen & Koren, 1883 accepted as Gracilechinus alexandri (Danielssen & Koren, 1883) (additional source)
Echinus elegans Düben & Koren, 1844 accepted as Gracilechinus elegans (Düben & Koren, 1844) (additional source)
Echinus esculentus Linnaeus, 1758 (additional source)
Echinus tenuispinus Norman, 1868 (additional source)
Eostichopus Cutress & Miller, 1982 (additional source)
Eostichopus regalis (Cuvier, 1817) accepted as Parastichopus regalis (Cuvier, 1817) (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)
Gorgonocephalus Leach, 1815 (additional source)
Gorgonocephalus caputmedusae (Linnaeus, 1758) (additional source)
Gorgonocephalus eucnemis (Müller & Troschel, 1842) (additional source)
Gorgonocephalus lamarckii (Müller & Troschel, 1842) (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)

English squirrel's tail for Sertularia argentea Linnaeus, 1758