Class [Mammalia] Linnaeus, 1758 - mammals
Count: [*] 21o;132f;1061g;4316s; ‡1f;5g;38s
   Order Rodentia Bowdich, 1821 - rodents
  Count: [*] 29f;399g;1788s; ‡1g;16s
     Family Myocastoridae Ameghino, 1902
    Count: [*] 1g;1s
       Genus Myocastor Kerr, 1792 - nutria
      Count: [*] 1s
         Myocastor coypus (Molina, 1782) R. Kerr, 1792 - coypu
        Count: -