Class [Mammalia] Linnaeus, 1758 - mammals Order Rodentia Bowdich, 1821 - rodents Family Abrocomidae Miller & Gidley, 1918 - chinchilla-rats Genus Abrocoma Waterhouse, 1837 - chinchilla rats 1 Abrocoma bennetti Waterhouse, 1837 see Abrocoma bennettii Waterhouse, 1837 2 Abrocoma cinerea Thomas, 1919