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| Kingdom Animalia |
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Cephalobranchia macrochaeta Bonnevie, 1913 -- valid |
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Clione Pallas, 1774 -- valid |
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Clionidae Gray, 1840 -- invalid |
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Cliopsidae O. G. Costa, 1873 -- valid |
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Cliopsis Troschel, 1854 -- valid |
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Crucibranchaea macrochira (Meisenheimer, 1905) -- invalid |
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Crucibranchaea michaelsarsi (Bonnevie, 1913) -- invalid |
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Massya Pruvot-Fol, 1924 -- valid |
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Massya longicirrata (Massy, 1917) -- valid |
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Notobranchaea Pelseneer, 1886 -- valid |
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Notobranchaea macdonaldi Pelseneer, 1886 -- valid |
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Paraclione Tesch, 1903 -- valid |
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Paraclione longicaudata (Souleyet, 1852) -- valid |
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Pneumodermopsis michaelsarsi Bonnevie, 1913 -- valid |
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Schizobrachium Meisenheimer, 1903 -- valid |
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Schizobrachium polycotylum Meisenheimer, 1903 -- valid |
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Thliptodon Boas, 1886 -- valid |
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Thliptodon antarcticus Meisenheimer, 1906 -- valid |
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Thliptodon diaphanus (Meisenheimer, 1903) -- valid |
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