Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Infraclass Eutheria Gill, 1872
       Magnorder Boreoeutheria Springer & de Jong, 2001
         Superorder Euarchontoglires Murphy, Stanyon & O'Brien, 2001
           Order Rodentia Bowdich, 1821 - rodents
             Suborder Supramyomorpha D'Elía, Fabre & Lessa, 2019
               Infraorder Castorimorphi
                 1 Family Castoridae Batsch, 1788 - beavers
                 2 Family Heteromyidae Gray, 1868 - pocket mice, kangaroo rats, and kangaroo mice
                 3 Family Geomyidae Bonaparte, 1845 - pocket gophers