Genus Actinopsis Koren and Danielssen, 1856 ? – synonym of Protanthea, Genus
Genus Actinothoe Stephenson, 1935 – synonym of Sagartiogeton, Genus
Genus Aegir Danielssen, 1887 ? – synonym of Halcampoides, Genus
Genus Bicidiopsis Verrill, 1922 – synonym of Peachia, Genus
Genus Bicidium Agassiz, 1859 – synonym of Peachia, Genus
Genus Chondractinia Lutken, 1861 – synonym of Hormathia, Genus
Genus Cyanthina Ehrenberg, 1834 – synonym of Caryophyllia, Genus
Genus Cymbactis Stephenson, 1918 – synonym of Stomphia, Genus
Genus Draytonia Duchassaing and Michelotti, 1866 – synonym of Corynactis, Genus
Genus Fagesia Delphy, 1938 – synonym of Edwardsiella, Genus
Genus Fenja Danielssen, 1887 ? – synonym of Halcampoides, Genus
Genus Halcampomorphe Carlgren, 1893 – synonym of Halcampoides, Genus
Genus Kylindrosactis Danielssen, 1890 – synonym of Stomphia, Genus
Genus Leptoptilum Kolliker, 1880 – synonym of Funiculina, Genus
Genus Lophohelia Haime and Milne-Edwards, in Milne-Edwards, 1857 – synonym of Lophelia, Genus
Genus Madoniactis Danielssen, 1890 – synonym of Urticina, Genus
Genus Melactis Verrill, 1868 – synonym of Corynactis, Genus
Genus Milneedwardsia Carlgren, 1893 – synonym of Edwardsiella, Genus
Genus Pavonaria Kolliker, 1869 – synonym of Balticina, Genus
Genus Philomedusa Muller, 1860 – synonym of Peachia, Genus
Genus Rolandia Lacaze-Duthiers, 1900 – synonym of Sarcodictyon, Genus
Genus Siphonactinia Koren and Danielssen, 1856 – synonym of Peachia, Genus
Genus Stenogorgia Verrill, 1883 – synonym of Swiftia, Genus
Genus Synarachnactis Carlgren, 1924 – synonym of Cerianthus, Genus
Genus Synphellia Carlgren, 1924 – synonym of Phellia, Genus
Genus Tealia Gosse, 1858 – synonym of Urticina, Genus
Genus Thoe E.P. Wright, 1859 – synonym of Actinothoe, Genus