Abietinaria abietina (Linnaeus, 1758) (additional source)
Abietinaria fusca (Johnston, 1847) (redescription)
Abietinaria pulchra (Nutting, 1904) (redescription)
Bonneviella grandis (Allman, 1876) (redescription)
Campanularia crenata Allman, 1876 accepted as Tulpa crenata (Allman, 1876) (additional source)
Campanulina pumila (Clark, 1875) (redescription)
Cladocarpus bonnevieae Jäderholm, 1909 accepted as Aglaophenopsis bonnevieae (Jäderholm, 1909) (additional source)
Cladocarpus diana Broch, 1918 (redescription)
Cladocarpus formosus Allman, 1877 (redescription)
Cladocarpus ramuliferus (Allman, 1874) accepted as Nematocarpus ramuliferus (Allman, 1874) (redescription)
Clava Gmelin, 1791 (redescription)
Clavidae McCrady, 1859 accepted as Hydractiniidae L. Agassiz, 1862 (status source)
Cuspidella quadridentatum (Hincks, 1874) accepted as Tetrapoma quadridentatum (Hincks, 1874) (redescription)
Diphasia rosacea (Linnaeus, 1758) (redescription)
Euphysa aurata Forbes, 1848 (additional source)
Filellum serpens (Hassall, 1848) (additional source)
Grammaria abietina (Sars, 1851) (additional source)
Halecium birulai Spassky, 1929 (redescription)
Halecium curvicaule Lorenz, 1886 (redescription)
Halecium groenlandicum Kramp, 1911 (additional source)
Halecium minutum Broch, 1903 (redescription)
Halecium muricatum (Ellis & Solander, 1786) (additional source)
Halecium sessile Norman, 1867 (redescription)
Halecium tenellum Hincks, 1861 (additional source)
Halecium textum Kramp, 1911 (redescription)
Halecium undulatum Billard, 1921 accepted as Halecium textum Kramp, 1911 (status source)
Halitholus yoldiaarcticae (Birula, 1897) accepted as Halitholus yoldiaearcticae (Birula, 1897) (basis of record)
Hydractinia carica Bergh, 1887 (redescription)
Hydractinia echinata (Fleming, 1828) (additional source)
Hydractinia monocarpa Allman, 1876 (additional source)
Hydractinia serrata Kramp, 1943 accepted as Clavactinia serrata (Kramp, 1943) (additional source)
Hydrallmania falcata (Linnaeus, 1758) (additional source)
Lafoeina maxima Levinsen, 1893 (redescription)
Opercularella lacerata (Johnston, 1847) (redescription)
Schizotricha frutescens (Ellis & Solander, 1786) (redescription)
Sertularella gayi (Lamouroux, 1821) (additional source)
Sertularia fabricii Levinsen, 1893 (redescription)
Sertularia schmidti Kudelin, 1914 (redescription)
Stegopoma plicatile (Sars, 1863) accepted as Ptychogena crocea Kramp & Damas, 1925 (redescription)
Streptocaulus pectiniferus (Allman, 1883) (redescription)
Symplectoscyphus bathyalis Vervoort, 1972 (redescription)
Tamarisca tamarisca (Linnaeus, 1758) (redescription)
Thuiaria alternitheca Levinsen, 1893 (additional source)
Thuiaria arctica (Bonnevie, 1899) (redescription)
Thuiaria articulata (Pallas, 1766) (redescription)
Thuiaria carica Levinsen, 1893 (redescription)
Zygophylax brownei Billard, 1924 (additional source)