Ruminants, like Stenomylus and modern cows, chew their food and then partially digest it in the rumen of their stomach. Later, they regurgitate the remaining solid material, called a cud, into the mouth. Then they re-chew and swallow it for final digestion


  • Title: Early camel, ruminant
  • Location: Harrison Formation, Sioux Co., Nebraska, United States, North America
  • Physical Dimensions: L: 93 cm W: 20 cm H: 84.8 cm
  • Type: Fossil
  • Rights: This image was obtained from the Smithsonian Institution. The image or its contents may be protected by international copyright laws. http://www.si.edu/termsofuse
  • External Link: View this object record in the Smithsonian Institution Collections Search Center
  • USNM Catalog Number(s): V16601
  • Scientific Name: <i>Stenomylus hitchcocki</i>
  • Photo Credit: Donald E. Hurlbert, Smithsonian Institution National Museum of Natural History
  • Historic Period: Lived 25–20 million years ago
  • Geologic Age: Cenozoic - Paleogene - Oligocene - Arikareean Lower
  • Field: Paleobiology

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