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Nomenclature of scales (top view of head)

In snakes, the internasal scales are those on top of the head between the scales that surround the nostrils.[1] They are usually paired and situated just behind the rostral.[2]

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See also

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References

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  1. ^ Wright AH, Wright AA (1957). Handbook of Snakes of the United States and Canada. Ithaca and London: Comstock Publishing Associates. (7th printing, 1985). 1,105 pp. (in two volumes). ISBN 0-8014-0463-0.
  2. ^ U.S. Navy (1991). Poisonous Snakes of the World. United States Government. New York: Dover Publications Inc. 203 pp. ISBN 0-486-26629-X.


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Bandy-bandy

listed as determinants of each species: (1) Internasals present/absent. For bandy-bandys, the internasal scales are a pair of scales that occur between

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an internasal, an oval-shaped bone which lies at the intersection of the paired premaxillae and nasal bones at the top of the snout. Internasals are

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taller than it is wide. In the internasal-prefrontal area there are 4–22 scales that include 2 large, triangular internasal scales that border the rostral

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bent backwards on the upper surface of the snout; anterior frontals [= internasals] very small; posterior frontals [= prefrontals] longer than broad, much

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snout connecting the nasals on both sides of the head are scales called internasals. Between the two prenasals is a scale at the tip of the snout called

Bone

process Mandibular notch Condyloid process Pterygoid fovea Nose Nasal bone Internasal suture Nasal foramina Inferior nasal concha Ethmoidal process Maxillary

Nasion

marks the midpoint at the intersection of the frontonasal suture with the internasal suture joining the nasal bones. It is visible on the face as a distinctly