Actinia Linnaeus, 1767 (additional source)
Aglaophenia Lamouroux, 1812 (additional source)
Amphipholis Ljungman, 1866 (additional source)
Amphipholis squamata (Delle Chiaje, 1828) (additional source)
Amphiura chiajei Forbes, 1843 (additional source)
Amphiura filiformis (O.F. Müller, 1776) (additional source)
Aora Krøyer, 1845 (additional source)
Arachnida (basis of record)
Asterias brachiata Montagu, 1804 accepted as Acrocnida brachiata (Montagu, 1804) (additional source)
Asterias ophiura Linnaeus, 1758 accepted as Ophiura ophiura (Linnaeus, 1758) (additional source)
Asterias papposus Linnaeus, 1767 accepted as Solaster papposus (Linnaeus, 1767) accepted as Crossaster papposus (Linnaeus, 1767) (additional source)
Astropecten Gray, 1840 (additional source)
Astropecten irregularis (Pennant, 1777) (additional source)
Catalaimus maxweberi de Man, 1922 accepted as Calyptronema maxweberi (de Man, 1922) (source of synonymy)
Cellaria Ellis & Solander, 1786 (additional source)
Cellularia Pallas, 1766 accepted as Cellaria Ellis & Solander, 1786 (source of synonymy)
Cellularia Pallas, 1766 accepted as Cellaria Ellis & Solander, 1786 (basis of record)
Chalinidae Gray, 1867 (additional source)
Crossaster Müller & Troschel, 1840 (additional source)
Crossaster papposus (Linnaeus, 1767) (additional source)
Daptonema oxycerca (de Man, 1888) Lorenzen, 1977 (additional source)
Echinocardium Gray, 1825 (additional source)
Echinocardium cordatum (Pennant, 1777) (additional source)
Echinocyamus van Phelsum, 1774 (additional source)
Echinocyamus pusillus (O.F. Müller, 1776) (additional source)
Echinus Linnaeus, 1758 (additional source)
Echinus esculentus Linnaeus, 1758 (additional source)
Echinus miliaris P.L.S. Müller, 1771 accepted as Psammechinus miliaris (P.L.S. Müller, 1771) (additional source)
Eleutherolaimus leptosoma de Man, 1893 accepted as Sarsonia leptosoma (de Man, 1893) Gerlach, 1967 (source of synonymy)
Enchelidium Ehrenberg, 1836 (basis of record)
Flustra dumerilii Audouin, 1826 accepted as Callopora dumerilii (Audouin, 1826) (basis of record)
Flustra dumerilii Audouin, 1826 accepted as Callopora dumerilii (Audouin, 1826) (source of synonymy)
Hydrallmania Hincks, 1868 (additional source)
Laomedea loveni Allman, 1859 accepted as Gonothyraea loveni (Allman, 1859) (basis of record)
Nemertesia antennina (Linnaeus, 1758) (additional source)
Nymphon leptocheles Sars, 1888 (additional source)
Nymphonidae Wilson, 1878 (basis of record)
Obelia bidentata Clark, 1875 (additional source)
Oncholaimus vulgaris Bastian, 1865 accepted as Pontonema vulgare (Bastian, 1865) Filipjev, 1916 (basis of record)
Oncholaimus vulgaris Bastian, 1865 accepted as Pontonema vulgare (Bastian, 1865) Filipjev, 1916 (source of synonymy)
Ophiocten Lütken, 1855 (additional source)
Ophiocten affinis (Lütken, 1858) (additional source)
Ophiothrix fragilis (Abildgaard in O.F. Müller, 1789) (additional source)
Ophiura Lamarck, 1801 (additional source)
Ophiura affinis Lütken, 1858 accepted as Ophiocten affinis (Lütken, 1858) (additional source)
Ophiura albida Forbes, 1839 (additional source)
Ophiura ophiura (Linnaeus, 1758) (additional source)
Ophiura robusta (Ayres, 1852) (additional source)
Pedicellina gracilis Sars, 1835 accepted as Barentsia gracilis (Sars, 1835) (basis of record)
Perigonimus muscus Allman, 1863 accepted as Bougainvillia muscus (Allman, 1863) (basis of record)
Perigonimus muscus Allman, 1863 accepted as Bougainvillia muscus (Allman, 1863) (source of synonymy)
Psammechinus L. Agassiz & Desor, 1846 (additional source)
Pseudarchaster Sladen, 1889 (additional source)
Pteropsyllus plebeius furcatus Kunz, 1938 (basis of record)
Sarsonia leptosoma (de Man, 1893) Gerlach, 1967 (additional source)
Sertularella Gray, 1848 (additional source)
Sertularia antennina Linnaeus, 1758 accepted as Nemertesia antennina (Linnaeus, 1758) (source of synonymy)
Sertularia falcata Linnaeus, 1758 accepted as Hydrallmania falcata (Linnaeus, 1758) (source of synonymy)
Sertularia pluma Linnaeus, 1758 accepted as Aglaophenia pluma (Linnaeus, 1758) (source of synonymy)
Sertularia spinosa Linnaeus, 1758 accepted as Vesicularia spinosa (Linnaeus, 1758) (source of synonymy)
Solaster papposus (Linnaeus, 1767) accepted as Crossaster papposus (Linnaeus, 1767) (basis of record)
Solaster papposus (Linnaeus, 1767) accepted as Crossaster papposus (Linnaeus, 1767) (source of synonymy)
Spatagus pusillus O.F. Müller, 1776 accepted as Echinocyamus pusillus (O.F. Müller, 1776) (additional source)
Spatangus Gray, 1825 (additional source)
Spatangus purpureus O.F. Müller, 1776 (additional source)
Theristus oxycerca (de Man, 1888) Wieser, 1956 accepted as Daptonema oxycerca (de Man, 1888) Lorenzen, 1977 (source of synonymy)

Arctic Ocean for Cucumaria frondosa (Gunnerus, 1767) 
Baltic sea for Hemiurus ocreatus (Rudolphi, 1802) Odhner, 1911 
Belgian Exclusive Economic Zone for Nymphon hirtum Fabricius, 1780 
Bretagne for Nymphon brevirostre Hodge, 1863 
Bretagne for Ocnus lacteus (Forbes & Goodsir, 1839) 
British Isles for Aslia lefevrei (Barrois, 1882) 
British Isles for Hemiurus ocreatus (Rudolphi, 1802) Odhner, 1911 
British Isles for Nymphon brevirostre Hodge, 1863 
British Isles for Nymphon leptocheles Sars, 1888 
Danish Exclusive Economic Zone for Nymphon brevirostre Hodge, 1863 
English Channel for Leptosynapta minuta (Becher, 1906) 
Faeroe Exclusive Economic Zone for Cucumaria frondosa (Gunnerus, 1767) 
Faeroe Exclusive Economic Zone for Ocnus lacteus (Forbes & Goodsir, 1839) 
French Exclusive Economic Zone [Atlantic part] for Aslia lefevrei (Barrois, 1882) 
Greenlandic Exclusive Economic Zone for Nymphon hirtum Fabricius, 1780 
Icelandic Exclusive Economic Zone for Nymphon hirtum Fabricius, 1780 
Irish Exclusive economic Zone for Aslia lefevrei (Barrois, 1882) 
Irish Exclusive economic Zone for Leptosynapta minuta (Becher, 1906) 
Kara Sea for Cucumaria frondosa (Gunnerus, 1767) 
Kattegat for Ocnus lacteus (Forbes & Goodsir, 1839) 
Kattegat for Thyone fusus (O.F. Müller, 1776) 
Mediterranean Sea for Nymphon gracile Leach, 1814 
Mediterranean Sea for Ocnus planci (Brandt, 1835) 
North Sea for Hemiurus ocreatus (Rudolphi, 1802) Odhner, 1911 
Norwegian Exclusive Economic Zone for Nymphon brevirostre Hodge, 1863 
Norwegian Exclusive Economic Zone for Nymphon gracile Leach, 1814 
Norwegian Exclusive Economic Zone for Nymphon hirtum Fabricius, 1780 
Norwegian Exclusive Economic Zone for Nymphon leptocheles Sars, 1888 
Portuguese Exclusive Economic Zone for Ocnus planci (Brandt, 1835) 
Scotland for Leptosynapta minuta (Becher, 1906) 
Scotland for Nymphon hirtum Fabricius, 1780 
Scotland for Ocnus planci (Brandt, 1835) 
Shetlands for Nymphon hirtum Fabricius, 1780 
Skagerrak for Cucumaria frondosa (Gunnerus, 1767) 
Spanish Exclusive Economic Zone [Atlantic part] for Leptosynapta minuta (Becher, 1906) 
Spitsbergen for Nymphon hirtum Fabricius, 1780 
United Kingdom Exclusive Economic Zone for Ocnus planci (Brandt, 1835) 

English squirrel's tail for Sertularia argentea Linnaeus, 1758