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
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             Class Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825
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               Subclass †Labyrinthodontia Meyer, 1842 see Class Amphibia Linnaeus, 1758
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                 Order †Ichthyostegalia (Save-Soderbergh, 1932) see Superclass Tetrapoda Goodrich, 1930
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                   Family †Acanthostegidae Jarvik, 1952
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