Cranioceras is an extinct genus of artiodactyl from the Miocene to the Pliocene in the United States.

Sources

  • After the Dinosaurs: The Age of Mammals (Life of the Past) by Donald R. Prothero
  • The Book of Life: An Illustrated History of the Evolution of Life on Earth, Second Edition by Stephen Jay Gould


Allikas: http://en.wikipedia.org/wiki/Cranioceras
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