Two Perspectives on the Evolution of the Tetrapod Limb

@article{Edwards1989TwoPO,
  title={Two Perspectives on the Evolution of the Tetrapod Limb},
  author={James L. Edwards},
  journal={Integrative and Comparative Biology},
  year={1989},
  volume={29},
  pages={235-254}
}
  • J. Edwards
  • Published 1 February 1989
  • Biology
  • Integrative and Comparative Biology
Synopsis. The evolution of the tetrapod limb is examined from two perspectives: struc? tural and functional. Rosen et al. (1981) argued that lungfishes are the sister group of tetrapods, with limb characteristics comprising an important subset of their evidence. A re-analysis of the limb characters advocated by Rosen et al. does not support their contention, but instead suggests that rhipidistian fishes of the family Osteolepidae are the closest relatives of the tetrapods. In order to… 

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The analysis of limb origins touches on many central issues of evolutionary morphology and entails a synthesis of genetic, developmental, and functional approaches.

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TRITURUS NEWTS DEFY THE RUNNING‐SWIMMING DILEMMA

It is concluded that the idea of a design conflict between aquatic and terrestrial locomotion, mediated through antagonistic effects of body elongation, does not apply to the model system.
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