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The caudal vertebræ ofEryx Johnii (Russell)

  • Published:
Proceedings / Indian Academy of Sciences

Summary

  1. (1)

    The caudal region of the vertebral column inSerpentes can be divided into three sub-regions :anterior caudal, middle caudal andposterior caudal.

  2. (2)

    The caudal part of the vertebral column ofEryx johnii, as compared to that of other snakes, shows a numerical reduction of the vertebræ, as well as a diminution in the length of their antero-posterior axes. This is due to a shortening and compression of the caudal region, mainly affecting the middle caudal and posterior caudal sub-regions.

  3. (3)

    The posterior caudal vertebræ inEryx johnii are unique in the whole order. They have bifurcatedneural spines, are devoid ofzygosphenes andzygantra, possessaccessory lateral plates, found nowhere else, have peculiaralar plates developed on the zygapophysial ridges, show parapophysialarticulation, and are furnished with three types ofhœmapophyses.

  4. (4)

    Two pairs of foramina not recorded hitherto are found to occur in the posterior caudal sub-region of the vertebral column inEryx johnii.

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Authors
  1. Maheshwar Singh Sood
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Additional information

Communicated by Mr. Beni Charan Mahendra,f.z.s.

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Sood, M.S. The caudal vertebræ ofEryx Johnii (Russell). Proc. Indian Acad. Sci. 14, 390–394 (1941). https://doi.org/10.1007/BF03051150

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  • DOI: https://doi.org/10.1007/BF03051150

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