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While reptile scales use a sophisticated naming system (see figures), there has been a certain confusion because of synonymous names. For instance, the ventral scales are often called ventrals but gastrosteges is common in the older literature. In more recent publications they are often abbreviated as VSR (for ventral scale rows) or simply V. [4]
Reptile scale types include: cycloid, granular (which appear bumpy), and keeled (which have a center ridge). Scales usually vary in size, the stouter, larger scales cover parts that are often exposed to physical stress (usually the feet, tail and head), while scales are small around the joints for flexibility.
Over time, reptilian skin cells became highly keratinised, horny, sturdy and desiccated. The surfaces of the dermis and epidermis of all reptilian scales form a single contiguous sheet, as can be seen when the snake sheds its skin as a whole. [6]
A protest sign referring to reptilian politicians. On September 12, 2003, during the provincial election campaign in Ontario, Canada, the Ernie Eves campaign issued a news release that called opponent Dalton McGuinty an "evil reptilian kitten-eater from another planet". [27] The words appeared at the end of the news release.
Chaac: the Maya civilization rain god, depicted in iconography with a human body showing reptilian or amphibian scales, and with a non-human head evincing fangs and a long, pendulous nose. Dragon Kings: creatures from Chinese mythology sometimes depicted as reptilian humanoids.
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.
This effect has led some to describe the post-injection look as “reptilian.” Person undergoing a beauty treatment, highlighting a controversial trend warned by doctors. Image credits: doctoryoun
The oldest known animal that may have been an amniote, a reptile rather than an amphibian, is Casineria [3] [4] (though it has also been argued to be a temnospondyl amphibian). [5] A series of footprints from the fossil strata of Nova Scotia, dated to 315 million years, show typical reptilian toes and imprints of scales. [6]