Class Mammalia Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Suborder Hystricognathi Tullberg, 1899 see Infraorder Hystricognathi Tullberg, 1899
       Family Abrocomidae Miller & Gidley, 1918 - chinchilla-rats
         Genus Abrocoma Waterhouse, 1837 - chinchilla rats
           1 Abrocoma bennettii Waterhouse, 1837
           2 Abrocoma boliviensis Glanz & Anderson, 1990
           3 Abrocoma cinerea Thomas, 1919