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Temporal range: Late Paleocene - Middle Eocene
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Suborder: Sciuromorpha
Infraorder: Protrogomorpha
Family: Ischyromyidae
Genus: Paramys
Leidy, 1871
  • P. adamus
  • P. atavus
  • P. compressidens
  • P. copei
  • P. delicatior
  • P. delicatus
  • P. excavatus
  • P. hunti
  • P. nini
  • P. pycnus
  • P. simpsoni
  • P. taurus

Paramys is an extinct genus of rodents from North America, Europe, and Asia. It is one of the oldest genera of rodents known and probably lived in trees. While the genus name literally means "like a mouse", it coexisted with Thisbemys, a similar rodent, thus yielding a reference to Pyramus and Thisbe.


  • Matthew, W. D. 1910. On the osteology and relationships of Paramys and the affinities of the Ischyromyidae. Bulletin of the American Museum of Natural History, 28:43–72.
  • Kenneth D. Rose, 2006. The Beginning of the Age of Mammals. The Johns Hopkins University Press. Baltimore MD. pp. 306-335
  • Kenneth D. Rose and Brenda J. Chinnery. The Postcranial Skeleton of Early Eocene Rodents. Bulletin of Carnegie Museum of Natural History. Volume 36, Issue 1 (December 2004): pp. 211–244
  • Tullberg, T. 1899. Ueber das System der Nagethiere. Eine Phylogenetische Studie. Nova Acta Regiae Soc. Scient Upsala, ser. 3, vol. 18: v + 514 pp., 57 pls
  • Wodd A. E. 1962. The Early Tertiary rodents of the family Paramyidae. Transactions of the American Philosophical Society. new series 52(1): 1–261.