Kingdom [Animalia] Linnaeus, 1758 - animals
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   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
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     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
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       Subdivision Bilateralia
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         Phylum Chordata Bateson, 1885 - chordates
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           Subphylum Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
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             Class Mammalia Linnaeus, 1758 - mammals
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               Subclass Eutheria Gill, 1872 see Infraclass Eutheria Gill, 1872
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                 Superorder Paenungulata Simpson, 1945 see Grandorder Paenungulata Simpson, 1945
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                   Order Sirenia Gill, 1872 - sea cows
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                     Family Dugongidae Gray, 1821 - dugong and sea cow
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                     Family Trichechidae Gill, 1872 - manatees
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