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The labial scales are the scales of
snakes Snakes are elongated Limbless vertebrate, limbless reptiles of the suborder Serpentes (). Cladistically Squamata, squamates, snakes are ectothermic, amniote vertebrates covered in overlapping Scale (zoology), scales much like other members of ...
and other scaled reptiles that border the mouth opening. These do not include the median scales on the upper and lower jawsWright AH, Wright AA. 1957. Handbook of Snakes. Comstock Publishing Associates (7th printing, 1985). 1105 pp. . (
rostral Rostral may refer to: Anatomy * Rostral (anatomical term), situated toward the oral or nasal region * Rostral bone, in ceratopsian dinosaurs * Rostral organ, of certain fish * Rostral scale The rostral scale, or rostral, in snakes and other sca ...
and
mental Mental may refer to: * of or relating to the mind Films * ''Mental'' (2012 film), an Australian comedy-drama film starring Toni Collette * ''Mental'' (2016 film), a Bangladeshi romantic-action film starring Shakib Khan * ''Mental'', a 2008 docu ...
scales). The term ''labial'' originates from (Latin for "lip"), which refers to any lip-like structure. In snakes, there are two different types of labial scales: supralabials and sublabials. The numbers of these scales present, and sometimes the shapes and sizes, are some of many characteristics used to differentiate species from one another. There are two different types of labial scales: *
Supralabials In reptiles, the supralabial scales, also called upper-labials, are those scales that border the mouth opening along the upper jaw. They do not include the median scaleWright AH, Wright AA. 1957. Handbook of Snakes. Comstock Publishing Associates ( ...
are the scales that form part of the upper lip. Also called upper labials. *
Sublabials In reptiles, the sublabial scales, also called lower-labials or infralabials, are those scales that border the mouth opening along the lower jaw. They do not include the median scaleWright AH, Wright AA. 1957. ''Handbook of Snakes''. Comstock Publis ...
are the scales that form part of the lower lip. Also called infralabials or lower labials.


Related scales

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Rostral scale The rostral scale, or rostral, in snakes and other scaled reptiles is the median plate on the tip of the snout that borders the mouth opening. Wright AH, Wright AA (1957). ''Handbook of Snakes of the United States and Canada''. Ithaca and London: ...
: median scale on the tip of the snout bordering the mouth opening. *
Mental scale The mental scale, or mental, in snakes and other scaled reptiles refers to the median plate on the tip of the lower jaw. Wright AH, Wright AA (1957). ''Handbook of Snakes of the United States and Canada''. Ithaca & London: Comstock Publishing A ...
: median scale on the tip of the lower jaw.


See also

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Snake scales Snakes, like other reptiles, have skin covered in scales.Boulenger, George A. 1890 The Fauna of British India. p. 1 Snakes are entirely covered with scales or scutes of various shapes and sizes, known as snakeskin as a whole. A scale protects ...
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Anatomical terms of location Standard anatomical terms of location are used to describe unambiguously the anatomy of humans and other animals. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position pr ...


References

{{Reflist Snake scales