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Thermogenesis, muscle hyperplasia, and the origin of birds

Authors

  • Stuart A. Newman

    Corresponding author
    1. Department of Cell Biology and Anatomy, New York Medical College, Valhalla, NY, USA
    • Department of Cell Biology and Anatomy, New York Medical College, Valhalla, NY, USA.
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Abstract

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It is classically believed that the origin of birds was driven by the evolution of flight. However, the enlargement of skeletal muscles (especially the thigh muscles) may have led to bipedality, freeing up the forelimbs for other adaptive changes like flying or swimming.

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