Abietinaria abietina (Linnaeus, 1758) (additional source)
Abietinaria filicula (Ellis & Solander, 1786) (additional source)
Abietinaria turgida (Clark, 1877) (basis of record)
Acaulis primarius Stimpson, 1853 (additional source)
Achelia scabra Wilson, 1880 (basis of record)
Achelia spinosa (Stimpson, 1853) (basis of record)
Actinauge cristata Riemann-Zürneck, 1986 (basis of record)
Aeginopsis laurentii Brandt, 1838 (additional source)
Aequorea Péron & Lesueur, 1810 (additional source)
Amaroucium Milne Edwards, 1841 accepted as Aplidium Savigny, 1816 (basis of record)
Ascidia Linnaeus, 1767 (additional source)
Ascidia obliqua Alder, 1863 (additional source)
Ascidia prunum Müller, 1776 (additional source)
Aulactinia stella (Verrill, 1864) (additional source)
Beroe Browne, 1756 accepted as Beroe O.F. Müller, 1776 (additional source)
Bolinopsis infundibulum (O.F. Müller, 1776) (additional source)
Bolocera tuediae (Johnston, 1832) (additional source)
Botrylloides aureum Sars, 1851 accepted as Botrylloides aureus Sars, 1851 (basis of record)
Bougainvillia Lesson, 1830 (additional source)
Bougainvillia carolinensis (McCrady, 1859) (basis of record)
Bougainvillia superciliaris (L. Agassiz, 1849) (additional source)
Calliobdella vivida (Verrill, 1872) accepted as Cystobranchus vividus Verrill, 1872 (basis of record)
Calycella syringa (Linnaeus, 1767) (additional source)
Campanularia crenata (Hartlaub, 1901) accepted as Orthopyxis crenata (Hartlaub, 1901) (additional source)
Campanularia edwardsi Nutting, 1901 accepted as Clytia hemisphaerica (Linnaeus, 1767) (basis of record)
Campanularia groenlandica Levinsen, 1893 (basis of record)
Campanularia hincksii Alder, 1856 (additional source)
Campanularia volubilis (Linnaeus, 1758) (additional source)
Candelabrum phrygium (Fabricius, 1780) (additional source)
Centroderes Zelinka, 1907 (additional source)
Cerianthus Delle Chiaje, 1841 (additional source)
Clava multicornis (Forsskål, 1775) (additional source)
Clavularia modesta (Verrill, 1874) (basis of record)
Clytia Lamouroux, 1812 (additional source)
Clytia hemisphaerica (Linnaeus, 1767) (additional source)
Cnemidocarpa mollis (Stimpson, 1852) (additional source)
Cnemidocarpa rhizopus (Redikorzev, 1907) (additional source)
Cordylophora caspia (Pallas, 1771) (additional source)
Corymorpha pendula L. Agassiz, 1862 (basis of record)
Coryne hincksi Bonnevie, 1898 (additional source)
Coryne pusilla Gaertner, 1774 (additional source)
Cosmetira pilosella Forbes, 1848 (additional source)
Craterolophus convolvulus (Johnston, 1835) (additional source)
Cuspidella quadridentatum (Hincks, 1874) accepted as Tetrapoma quadridentatum (Hincks, 1874) (additional source)
Dendrodoa aggregata Müller, 1776 (additional source)
Dendrodoa grossularia (Van Beneden, 1846) (additional source)
Dendrodoa pulchella (Rathke, 1806) (additional source)
Dicoryne conferta (Alder, 1856) (additional source)
Didemnum candidum Savigny, 1816 (additional source)
Dimophyes arctica (Chun, 1897) (additional source)
Diphasia Agassiz, 1862 (additional source)
Diphasia fallax (Johnston, 1847) (additional source)
Diphasia rosacea (Linnaeus, 1758) (additional source)
Duva florida (Rathke, 1806) (additional source)
Dynamena pumila (Linnaeus, 1758) (additional source)
Echinoderes Claparède, 1863 (additional source)
Echinophthirius horridus (von Olfers, 1816) (basis of record)
Echiurus echiurus (Pallas, 1766) (additional source)
Ectopleura crocea (Agassiz, 1862) (additional source)
Ectopleura larynx (Ellis & Solander, 1786) (basis of record)
Edwardsia Quatrefages, 1842 (additional source)
Edwardsia sipunculoides (Stimpson, 1853) (basis of record)
Epizoanthus erdmanni (Danielssen, 1890) (additional source)
Epizoanthus incrustatus Düben & Koren, 1847 accepted as Epizoanthus papillosus Johnston, 1842 (additional source)
Eudendrium album Nutting, 1898 (additional source)
Eudendrium capillare Alder, 1856 (additional source)
Eudendrium dispar L. Agassiz, 1862 (basis of record)
Eudendrium rameum (Pallas, 1766) (additional source)
Eudendrium ramosum Van Beneden, 1844 accepted as Bougainvillia muscus (Allman, 1863) (additional source)
Eugyra glutinans (Moeller, 1842) (basis of record)
Euphysa tentaculata Linko, 1905 (additional source)
Filellum serpens (Hassall, 1848) (additional source)
Garveia brevis (Fraser, 1918) (basis of record)
Garveia cerulea (Clarke, 1882) accepted as Calyptospadix cerulea Clarke, 1882 (basis of record)
Gersemia von Marenzeller, 1878 (basis of record)
Gersemia clavata (Danielssen, 1887) (basis of record)
Golfingia Lankester, 1885 (additional source)
Gonatus fabricii (Lichtenstein, 1818) (additional source)
Gonothyraea Allman, 1864 (additional source)
Gonothyraea loveni (Allman, 1859) (additional source)
Grammaria abietina (Sars, 1851) (additional source)
Grammaria gracilis Stimpson, 1854 (basis of record)
Halecium Oken, 1815 (additional source)
Halecium beanii (Johnston, 1838) (basis of record)
Halecium curvicaule Lorenz, 1886 (additional source)
Halecium halecium (Linnaeus, 1758) accepted as Halecium halecinum (Linnaeus, 1758) (additional source)
Halecium labrosum Alder, 1859 (additional source)
Halecium minutum Broch, 1903 (additional source)
Halecium muricatum (Ellis & Solander, 1786) (additional source)
Halecium scutum Clark, 1977 (basis of record)
Halecium sessile Norman, 1867 (additional source)
Halecium tenellum Hincks, 1861 (additional source)
Haliclystus octoradiatus James-Clark, 1863 (additional source)
Haliclystus salpinx James-Clark, 1863 (additional source)
Halipteris finmarchica (Sars, 1851) accepted as Balticina finmarchica (Sars, 1851) (additional source)
Hamingia arctica Danielssen & Koren, 1880 (additional source)
Hartlaubella gelatinosa (Pallas, 1766) (additional source)
Hormathia nodosa (Fabricius, 1780) (additional source)
Hybocodon pendulus (L. Agassiz, 1862) accepted as Corymorpha pendula L. Agassiz, 1862 (basis of record)
Hydractinia carica Bergh, 1887 (additional source)