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Temporal range: Eocene
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Perissodactyla
Family: Brontotheriidae
Genus: Duchesneodus
Lucas and Schoch (1982)
  • D. primitivum
  • D. uintensis

Duchesneodus is a large brontothere endemic to North America during the Eocene living from 46.2—38 mya, existing for approximately 8.2 million years.[1]


Duchesneodus was named by Lucas and Schoch (1982).[2] It was assigned to Brontotheriidae by Lucas and Schoch (1982) and Carroll (1988); and to Brontotheriinae by Mader (1998).[3]


Two specimens were examined by M. Mendoza for body mass The first specimen was estimated to have a weight of 215.7 kg (480 lb). The second was estimated to have a weight of 607 kg (1,300 lb).[4]


  1. ^ PaleoBiology Database: Duchesneodus, basic info
  2. ^ S. G. Lucas and R. M. Schoch. 1982. Journal of Paleontology 56(4)
  3. ^ B. J. Mader. 1998. Brontotheriidae. In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.), Evolution of Tertiary Mammals of North America 1:525-536
  4. ^ M. Mendoza, C. M. Janis, and P. Palmqvist. 2006. Estimating the body mass of extinct ungulates: a study on the use of multiple regression. Journal of Zoology 270(1):90-101