The origin of mammalian endothermy: a paradigm for the evolution of complex biological structure

  title={The origin of mammalian endothermy: a paradigm for the evolution of complex biological structure},
  author={Thomas Kemp},
  journal={Zoological Journal of the Linnean Society},
  • T. Kemp
  • Published 1 August 2006
  • Biology
  • Zoological Journal of the Linnean Society
Several mutually incompatible theories exist about how and why endothermy evolved in mammals and birds. Some take the primary function to have been thermoregulation, selected for one adaptive purpose or another. Others take the high aerobic metabolic rate to have been primary. None of these theories is incontrovertibly supported by evidence, either from the fossil record of the synapsid amniotes or from observations and experiments on modern organisms. Furthermore, all are underpinned by the… 

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