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 Mammalia Linnaeus, 1758 - mammals
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               Subclass Eutheria Gill, 1872 see Infraclass Eutheria Gill, 1872
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                 Order Rodentia Bowdich, 1821 - rodents
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                   Suborder Caviomorpha Wood & Patterson, 1955 see Parvorder Caviomorpha Wood & Patterson, 1955
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                     Superfamily Octodontoidea Waterhouse, 1839
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                       1 Family Octodontidae Waterhouse, 1840 - octodonts
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                       2 Family Ctenomyidae Lesson, 1842 - tuco-tucos
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                       3 Family Abrocomidae Miller & Gidley, 1918 - chinchilla-rats
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                       4 Family Echimyidae Gray, 1825 - spiny rats
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                       5 Family Capromyidae Smith, 1842 - hutias and nutria
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                       6 Family Myocastoridae Ameghino, 1902
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