Actiniaria incertae sedis (basis of record)
Actiniidae Rafinesque, 1815 (basis of record)
Actinostola Verrill, 1883 (basis of record)
Actinostola callosa (Verrill, 1882) (basis of record)
Actinostolidae Carlgren, 1932 (basis of record)
Anthosactis Danielssen, 1890 (basis of record)
Anthosactis janmayeni Danielssen, 1890 (basis of record)
Aulactinia Agassiz in Verrill, 1864 (basis of record)
Aulactinia spetsbergensis (Carlgren, 1921) (basis of record)
Aulactinia stella (Verrill, 1864) (basis of record)
Bolocera Gosse, 1860 (basis of record)
Bolocera tuediae (Johnston, 1832) (basis of record)
Cactosoma Danielssen, 1890 (basis of record)
Cactosoma abyssorum Danielssen, 1890 (basis of record)
Cerianthidae Milne Edwards & Haime, 1851 (basis of record)
Cerianthus Delle Chiaje, 1841 (basis of record)
Cerianthus lloydi Gosse, 1859 accepted as Cerianthus lloydii Gosse, 1859 accepted as Synarachnactis lloydii (Gosse, 1859) (basis of record)
Cerianthus vogti Danielssen, 1890 (basis of record)
Cribrinopsis Carlgren, 1921 (basis of record)
Cribrinopsis similis Carlgren, 1921 (basis of record)
Edwardsia Quatrefages, 1842 (basis of record)
Edwardsia andresi Danielssen, 1890 (basis of record)
Edwardsia arctica Carlgren, 1921 (basis of record)
Edwardsia finmarchica Carlgren, 1921 (basis of record)
Edwardsia fusca Danielssen, 1890 (basis of record)
Edwardsia vegae Carlgren, 1921 (basis of record)
Edwardsiella Andres, 1883 (basis of record)
Edwardsiidae Andres, 1881 (basis of record)
Epiactis Verrill, 1869 (basis of record)
Epiactis arctica (Verrill, 1868) (basis of record)
Epiactis incerta Carlgren, 1921 (basis of record)
Epiactis marsupialis Carlgren, 1901 (basis of record)
Epizoanthidae Delage & Hérouard, 1901 (basis of record)
Epizoanthus Gray, 1867 (basis of record)
Epizoanthus danielsseni Carlgren, 1913 (basis of record)
Epizoanthus erdmanni (Danielssen, 1890) (basis of record)
Epizoanthus lindahli Carlgren, 1913 (basis of record)
Glandulactis Riemann-Zürneck, 1978 (basis of record)
Glandulactis spetsbergensis (Carlgren, 1893) (basis of record)
Gonactinia Sars, 1851 (basis of record)
Gonactinia prolifera (Sars, 1835) (basis of record)
Gonactiniidae Carlgren, 1893 (basis of record)
Halcampa Gosse, 1858 (basis of record)
Halcampa arctica Carlgren, 1893 (basis of record)
Halcampidae Andres, 1883 (basis of record)
Halcampoides Danielssen, 1890 (basis of record)
Halcampoididae Appellöf, 1896 (basis of record)
Haliactiidae Carlgren, 1949 accepted as Haliactinidae Carlgren, 1949 (basis of record)
Haliactis Carlgren, 1921 (basis of record)
Haliactis arctica Carlgren, 1921 (basis of record)
Hormathia Gosse, 1859 (basis of record)
Hormathia digitata (O.F. Müller, 1776) (basis of record)
Hormathiidae Carlgren, 1932 (basis of record)
Isozoanthus Carlgren in Chun, 1903 (basis of record)
Isozoanthus bulbosus Carlgren, 1913 (basis of record)
Limnactinia Carlgren, 1921 (basis of record)
Limnactinia laevis Carlgren, 1921 (basis of record)
Limnactiniidae Carlgren, 1921 (basis of record)
Liponema Hertwig, 1882 (basis of record)
Liponema multicornis (Verrill, 1880) accepted as Liponema multicorne (Verrill, 1880) (basis of record)
Liponematidae Hertwig, 1882 (basis of record)
Metridiidae Carlgren, 1893 (basis of record)
Metridium de Blainville, 1824 (basis of record)
Metridium senile (Linnaeus, 1761) (basis of record)
Nematostella Stephenson, 1935 (basis of record)
Nematostella nathorsti (Carlgren, 1921) accepted as Nematostella nathorstii (Carlgren, 1921) (basis of record)
Nematostella polaris (Carlgren, 1921) (basis of record)
Paraedwardsia Carlgren in Nordgaard, 1905 (basis of record)
Paraedwardsia arenaria Carlgren in Nordgaard, 1905 (basis of record)
Parazoanthidae Delage & Hérouard, 1901 (basis of record)
Ptychodactiidae Appellöf, 1893 accepted as Ptychodactinidae Appellöf, 1893 (basis of record)
Ptychodactis Appellöf, 1893 (basis of record)
Ptychodactis patula Appellöf, 1893 (basis of record)
Pycnanthus McMurrich, 1893 (basis of record)
Pycnanthus densus Carlgren, 1921 (basis of record)
Stomphia (Gosse, 1859) (basis of record)
Stomphia coccinea (Müller, 1776) (basis of record)
Tealia Gosse, 1858 (basis of record)
Tealia crassicornis (Müller, 1776) accepted as Urticina crassicornis (Müller, 1776) (basis of record)
Urticina Ehrenberg, 1834 (basis of record)
Urticina crassicornis (Müller, 1776) (basis of record)
Urticina felina (Linnaeus, 1761) (basis of record)