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Prenasal and postnasal scales

In reptiles, the nasal scale refers to the scale that encloses the nostril. [1]

Sometimes this scale is paired (divided). In such cases, the anterior half is referred to as the prenasal and the posterior half is referred to as the postnasal. [2]

Supranasal scales are located above the nasal scale. [1]

See also

References

  1. ^ a b Mallow D, Ludwig D, Nilson G (2003). True Vipers: Natural History and Toxinology of Old World Vipers. Malabar, Florida: Krieger Publishing Company. 359 pp. ISBN  0-89464-877-2.
  2. ^ Wright AH, Wright AA (1957). Handbook of Snakes of the United States and Canada. Ithaca and London: Comstock Publishing Associates, a Division of Cornell University Press. (7th printing, 1985). 1,105 pp. ISBN  0-8014-0463-0.