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| Kingdom Animalia |
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Actinulida Swedmark and Teissier, 1958 -- valid |
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Armorhydra Swedmark and Teissier, 1958 -- valid |
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Armorhydra janowiczi Swedmark and Teissier, 1958 -- valid |
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Armorhydridae Swedmark and Teissier, 1958 -- valid |
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Bougainvilliidae Lütken, 1850 -- valid |
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Bythocellata Nair, 1951 -- valid |
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Bythocellata cruciformis Nair, 1951 -- valid |
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Bythotiara Günther, 1903 -- valid |
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Bythotiara depressa Naumov, 1960 -- valid |
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Bythotiara drygalskii Vanhöffen, 1912 -- valid |
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Bythotiara huntsmani (Fraser, 1911) -- valid |
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Bythotiara murrayi Günther, 1903 -- valid |
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Bythotiara stilbosa Mills and Rees, 1979 -- valid |
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Bythotiaridae Maas, 1905 -- valid |
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Calycopsidae Bigelow, 1913 -- invalid |
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Calycopsis Fewkes, 1882 -- valid |
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Calycopsis chuni Vanhöffen, 1911 -- valid |
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Calycopsis gara Petersen, 1957 -- valid |
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Calycopsis krampi Petersen, 1957 -- valid |
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Calycopsis simplex Kramp and Damas, 1925 -- valid |
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Capitata Kühn, 1913 -- valid |
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Chromatonema erythrogonon (Bigelow, 1909) -- valid |
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Chromatonema rubrum Fewkes, 1882 -- valid |
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Cladocorynidae Allman, 1872 -- valid |
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Cladonematidae Gegenbaur, 1857 -- valid |
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Clavidae McCrady, 1859 -- invalid |
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Clytia discoida (Mayer, 1900) -- valid |
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Clytia folleata (McCrady, 1859) -- valid |
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Clytia gelatinosa (Mayer, 1900) -- valid |
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Clytia simplex (Browne, 1902) -- valid |
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Clytia uchidai (Kramp, 1961) -- valid |
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Corymorphidae Allman, 1872 -- valid |
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Corynidae Johnston, 1836 -- valid |
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Cytaeididae L. Agassiz, 1862 -- valid |
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Dipurena dolichogaster Haeckel, 1864 -- valid |
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Eirenidae Haeckel, 1879 -- valid |
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Eleutheria Quatrefages, 1842 -- valid |
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Eleutheria claparedei Hartlaub, 1889 -- valid |
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Eleutheria dichotoma Quatrefages, 1842 -- valid |
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Eleutheriidae Russell, 1953 -- valid |
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Eucheilota paradoxica Mayer, 1900 -- valid |
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Eumedusa Bigelow, 1920 -- valid |
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Euphysora Maas, 1905 -- valid |
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Filifera Kühn, 1913 -- valid |
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Geryoniidae Eschscholtz, 1829 -- valid |
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Halammohydra Remane, 1927 -- valid |
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Halammohydra adherens Swedmark and Teissier, 1958 -- valid |
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Halammohydra octopodides Remane, 1927 -- valid |
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Halammohydra schulzei Remane, 1927 -- valid |
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Halammohydra vermiformis Swedmark and Teissier, 1957 -- valid |
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Halammohydridae Remane, 1927 -- valid |
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Halicreatidae Fewkes, 1886 -- valid |
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Halimedusidae Arai and Brinckmann-Voss, 1980 -- valid |
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Heterotiara Maas, 1905 -- valid |
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Heterotiara anonyma Maas, 1905 -- valid |
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Heterotiara minor Vanhöffen, 1911 -- valid |
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Hydractiniidae L. Agassiz, 1862 -- valid |
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Hydrocorynidae Rees, 1957 -- valid |
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Irenium Haeckel, 1879 -- valid |
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Kanaka Uchida, 1947 -- valid |
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Kanaka pelagica Uchida, 1947 -- valid |
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Limnocnida Günther, 1893 -- valid |
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Limnocnida indica Annandale, 1912 -- valid |
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Limnocnida tanganyicae Günther, 1893 -- valid |
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Limnocnididae -- invalid |
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Limnomedusae Kramp, 1938 -- valid |
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Malagazziidae Bouillon, 1984 -- valid |
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Margelopsidae Uchida, 1927 -- valid |
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Melicertum georgicum A. Agassiz, 1862 -- valid |
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Microcampana Fewkes, 1889 -- valid |
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Microcampana conica Fewkes, 1889 -- valid |
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Modeeria rotunda (Quoy and Gaimard, 1827) -- valid |
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Moerisiidae Poche, 1914 -- valid |
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Narcomedusae Haeckel, 1879 -- valid |
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Netocertoides brachiatus Mayer, 1900 -- valid |
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Octocannoidae Bouillon, Boero and Seghers, 1991 -- valid |
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Octocannoides Menon, 1932 -- valid |
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Octophialucium Kramp, 1955 -- valid |
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Olindiidae Haeckel, 1879 -- valid |
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Orchistomatidae Bouillon, 1984 -- valid |
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Otohydra Swedmark and Teissier, 1958 -- valid |
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Otohydra vagans Swedmark and Teissier, 1958 -- valid |
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Otohydridae Swedmark and Teissier, 1958 -- valid |
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Pachycordyle Weismann, 1883 -- valid |
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Pachycordyle conica Kramp, 1959 -- valid |
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Pachycordyle degenerata (Mayer, 1904) -- valid |
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Pachycordyle globulosa Kramp, 1959 -- valid |
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Pachycordyle lineata Kramp, 1959 -- valid |
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Pandeidae Haeckel, 1879 -- valid |
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Pennaria Goldfuss, 1820 -- valid |
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Pennaria adamsia von Lendenfeld, 1884 -- valid |
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Pennaria armata Vanhöffen, 1911 -- valid |
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Pennaria disticha Goldfuss, 1820 -- valid -- feather hydroid |
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Pennaria grandis Kramp, 1928 -- valid |
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Pennaria pauper Kramp, 1959 -- valid |
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Pennaria rosea von Lendenfeld, 1884 -- valid |
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Pennaria vitrea Agassiz and Mayer, 1899 -- valid |
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Pennariidae McCrady, 1859 -- valid |
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Petasidae Haeckel, 1879 -- valid |
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Phialuciidae Kramp, 1955 -- valid |
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Polyorchidae Agassiz, 1862 -- valid |
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Porpitidae Goldfuss, 1818 -- valid |
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Proboscidactylidae Hand and Hendrickson, 1950 -- valid |
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Propachycordyle Thiel, 1931 -- valid |
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Propachycordyle canalifera Thiel, 1931 -- valid |
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Ptychogastriidae Mayer, 1910 -- valid |
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Rathkeidae Russell, 1953 -- valid |
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Rhopalonematidae Russell, 1953 -- valid |
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Russellia Kramp, 1957 -- valid |
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Russellia mirabilis Kramp, 1957 -- valid |
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Russelliidae Kramp, 1957 -- valid |
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Sibogita Maas, 1905 -- valid |
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Sibogita geometrica Maas, 1905 -- valid |
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Sibogita geometrica occidentalis Kramp, 1959 -- valid |
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Sphaerocorynidae Prévot, 1959 -- valid |
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Staurophora mertensii Brandt, 1838 -- valid |
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Tima Eschscholtz, 1829 -- valid |
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Timoides Bigelow, 1904 -- valid |
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Trachymedusae Haeckel, 1866 -- valid |
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Trichydridae Hincks, 1868 -- valid |
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Tubulariidae Fleming, 1828 -- valid |
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Zancleidae Russell, 1953 -- valid |
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Zancleopsidae Bouillon, 1978 -- valid |
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