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Temporal range: Early Eocene to Recent
Ord's kangaroo rat
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Suborder: Castorimorpha
Wood, 1955
Extant families

Superfamily Castoroidea:

Superfamily Geomyoidea:

Castorimorpha is the suborder of rodents containing the beavers and the kangaroo rats. A 2017 study using retroposon markers indicated that they are most closely related to the Anomaluromorpha (the scaly-tailed squirrels and the springhare) and Myomorpha (mouse-like rodents).[1]


† indicates extinct taxa.



  1. ^ Doronina, Liliya; Matzke, Andreas; Churakov, Gennady; Stoll, Monika; Huge, Andreas; Schmitz, Jürgen (3 March 2017). "The beaver's phylogenetic lineage illuminated by retroposon reads". Scientific Reports. 7 (1). doi:10.1038/srep43562.


  • Carleton, M. D. and G. G. Musser. 2005. Order Rodentia. Pp 745-752 in Mammal Species of the World A Taxonomic and Geographic Reference. Johns Hopkins University Press, Baltimore.
  • McKenna, Malcolm C., and Bell, Susan K. 1997. Classification of Mammals Above the Species Level. Columbia University Press, New York, 631 pp. ISBN 0-231-11013-8