Actinauge Verrill, 1883 (basis of record)
Actinernidae Stephenson, 1922 (basis of record)
Actinernus Verrill, 1879 (basis of record)
Actinia Linnaeus, 1767 (basis of record)
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)
Actinothoe Fischer, 1889 (basis of record)
Adamsia Forbes, 1840 accepted as Calliactis Verrill, 1869 (basis of record)
Allantactis Danielssen, 1890 (basis of record)
Allantactis parasitica Danielssen, 1890 (basis of record)
Amphianthus Hertwig, 1882 (basis of record)
Arachnactidae McMurrich, 1910 (basis of record)
Arachnactis Sars, 1846 (basis of record)
Aulactinia Agassiz in Verrill, 1864 (basis of record)
Aulactinia stella (Verrill, 1864) (basis of record)
Bolocera Gosse, 1860 (basis of record)
Bolocera tuediae (Johnston, 1832) (basis of record)
Bunodactis Verrill, 1899 (basis of record)
Calliactis Verrill, 1869 (basis of record)
Cerianthidae Milne Edwards & Haime, 1851 (basis of record)
Cerianthus Delle Chiaje, 1841 (basis of record)
Diadumene Stephenson, 1920 (basis of record)
Diadumenidae Stephenson, 1920 (basis of record)
Edwardsia Quatrefages, 1842 (basis of record)
Edwardsiella Andres, 1883 (basis of record)
Edwardsiidae Andres, 1881 (basis of record)
Epiactis Verrill, 1869 (basis of record)
Epiactis fecunda (Verrill, 1899) accepted as Urticina fecunda (Verrill, 1899) (basis of record)
Epizoanthidae Delage & Hérouard, 1901 (basis of record)
Epizoanthus Gray, 1867 (basis of record)
Epizoanthus americanus Verrill, 1864 accepted as Epizoanthus papillosus Johnston, 1842 (basis of record)
Epizoanthus erdmanni (Danielssen, 1890) (basis of record)
Epizoanthus paguriphilus Verrill, 1883 (basis of record)
Epizoanthus papillosus Johnston, 1842 (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)
Halcampa duodecimcirrata (Sars, 1851) (basis of record)
Halcampidae Andres, 1883 (basis of record)
Haliplanella Hand, 1956 (basis of record)
Haloclavidae Verrill, 1899 (basis of record)
Hormathia Gosse, 1859 (basis of record)
Hormathia digitata (O.F. Müller, 1776) (basis of record)
Hormathia nodosa (Fabricius, 1780) (basis of record)
Hormathiidae Carlgren, 1932 (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)
Mesacmaea Andres, 1883 (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 vectensis Stephenson, 1935 (basis of record)
Pachycerianthus Roule, 1904 (basis of record)
Paracalliactis Carlgren, 1928 (basis of record)
Paranthus Andres, 1883 (basis of record)
Peachia Gosse, 1855 (basis of record)
Sagartiidae Gosse, 1858 (basis of record)
Sagartiogeton Carlgren, 1924 (basis of record)
Sagartiogeton verrilli Carlgren, 1942 (basis of record)
Stephanauge Verrill, 1899 (basis of record)
Stomphia (Gosse, 1859) (basis of record)
Stomphia coccinea (Müller, 1776) (basis of record)
Tealia Gosse, 1858 (basis of record)
Tealia felina (Linnaeus, 1767) accepted as Urticina felina (Linnaeus, 1761) (basis of record)
Urticina Ehrenberg, 1834 (basis of record)
Urticina crassicornis (Müller, 1776) (basis of record)
Urticina felina (Linnaeus, 1761) (basis of record)