Parietal scales

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Revision as of 13:13, 17 December 2006 by imported>Jaap Winius (Definition according to Wright & Wright (1957) and Campbell & Lamar (2004).)
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In snakes, the parietals are a pair of large scales on top of the head behind the frontal scale. Sometimes, these form a single scale as in the genus Charina.[1] In most vipers, they are fragmented into many small scales.[2]

Cited references

  1. Wright AH, Wright AA. 1957. Handbook of Snakes. Comstock Publishing Associates. (7th printing, 1985). 1105 pp. ISBN 0-8014-0463-0.
  2. Campbell JA, Lamar WW. 2004. The Venomous Reptiles of the Western Hemisphere. Comstock Publishing Associates, Ithaca and London. 870 pp. 1500 plates. ISBN 0-8014-4141-2.