Actinia Linnaeus, 1767 (additional source)
Aglaophenia Lamouroux, 1812 (additional source)
Aora Krøyer, 1845 (additional source)
Arachnida (basis of record)
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 (basis of record)
Cellularia Pallas, 1766 accepted as Cellaria Ellis & Solander, 1786 (source of synonymy)
Chalinidae Gray, 1867 (additional source)
Daptonema oxycerca (de Man, 1888) Lorenzen, 1977 (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)
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)
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)
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