Dinosaur Physiology and the Origin of Mammals.

  title={Dinosaur Physiology and the Origin of Mammals.},
  author={Robert T Barker},
  journal={Evolution; international journal of organic evolution},
  volume={25 4},
Today and throughout the Cenozoic mammals have been the dominant class of land vertebrates. Mammals are the most conspicuous elements in most terrestrial vertebrate communities, and the vast majority of large land vertebrates (50 kg and larger) are mammals. The success of mammals probably is due in large measure to their high metabolic rates, great scope for increasing metabolism during activity, and their ability to maintain constant body temperatures by complex mechanisms of heat production… CONTINUE READING


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