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The scales may be ossified or tubercular, as in the case of lizards, or modified elaborately, as in the case of snakes. [1] The scales on the top of lizard and snake heads has also been called pileus, after the Latin word for cap, referring to the fact that these scales sit on the skull like a cap. [2]
Procedurally generated tiling textures. In computer graphics, a procedural texture [1] is a texture created using a mathematical description (i.e. an algorithm) rather than directly stored data. The advantage of this approach is low storage cost, unlimited texture resolution and easy texture mapping. [2]
Non-European lizards such as Sphaerodactylus macrolepis also display keeled scales. [3] Klauber (1997) describes how the keels on the scales of Crotalus rattlesnakes are particularly strong mid-dorsally, but gradually weaken on the lateral rows with the ventral scales being smooth. He then references a 1938 study, stating that it "has suggested ...
The scales and scutes of birds were thought to be homologous to those of reptiles, [4] but are now agreed to have evolved independently, being degenerate feathers. [ 5 ] [ 6 ] Carcharodontosaurid theropod dinosaur Concavenator , is known to have possessed these feather-derived tarsal scutes.
Squamata (/ s k w æ ˈ m eɪ t ə /, Latin squamatus, 'scaly, having scales') is the largest order of reptiles, comprising lizards and snakes.With over 12,162 species, [3] it is also the second-largest order of extant (living) vertebrates, after the perciform fish.
Common rough-scaled lizards are medium-sized lizards each with a small head, body, and a long tail. The frontonasal is divided and has small body scales in 42 to 58 rows at the midline. [2] The backs of these lizards are brownish grey with narrow dark blotches and rows of pale spots. [2]
Teiids can be distinguished from other lizards by the following characteristics: large rectangular scales that form distinct transverse rows ventrally and generally small granular scales dorsally, [2] head scales that are separate from the skull bones, and teeth that are solid at the base and "glued" to the jaw bones.
Reptiles depicts a desk upon which is a two dimensional drawing of a tessellated pattern of reptiles and hexagons, Escher's 1939 Regular Division of the Plane. [2] [3] [1] The reptiles at one edge of the drawing emerge into three dimensional reality, come to life and appear to crawl over a series of symbolic objects (a book on nature, a geometer's triangle, a three dimensional dodecahedron, a ...