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Lepidosauromorpha (in PhyloCode known as Pan-Lepidosauria [2] [3]) is a group of reptiles comprising all diapsids closer to lizards than to archosaurs (which include crocodiles and birds). The only living sub-group is the Lepidosauria , which contains two subdivisions, Squamata , which contains lizards and snakes , and Rhynchocephalia , the ...
Living lepidosaurs, which include snakes, lizards, and rhynchocephalians, occupy a wide range of environments and niches. [2] The lepidosaurs have many similar anatomical morphology like transverse cloaca, distal tongue, superficial teeth attachment, fused pelvic bones etc. [ 3 ] Though widely viewed as obligate carnivores, a small number of ...
Snakes and legless lizards have evolved the complete loss of their limbs. The upper jaw of Squamates is movable on the cranium, a configuration called kinesis. [28] This is made possible by a loose connection between the quadrate and its neighboring bones. [29] Without this, snakes would not be able consume prey that are much larger than ...
Center for North American Herpetology over 500 species of reptiles and amphibians; European Field Herping Community; New Zealand Herpetology Archived 2007-10-20 at the Wayback Machine; Chicago Herpetological Society; Biology of the Reptilia is an online copy of the full text of a 22-volume 13,000-page summary of the state of research of reptiles.
Lizards and snakes share a movable quadrate bone, distinguishing them from the rhynchocephalians, which have more rigid diapsid skulls. [5] Some lizards such as chameleons have prehensile tails, assisting them in climbing among vegetation. [6] As in other reptiles, the skin of lizards is covered in overlapping scales made of keratin. This ...
Squamata (/ s k w æ ˈ m eɪ t ə /, Latin squamatus, 'scaly, having scales') is the largest order of reptiles, comprising lizards (including snakes).With over 12,162 species, [3] it is also the second-largest order of extant (living) vertebrates, after the perciform fish.
Turtles, snakes, lizards, and crocodilians are all represented as U.S. state reptiles. In terms of common divisions of reptiles, turtles are most popular. Fifteen of the twenty-seven states give them official status. [nb 1] [nb 5] The rest of the state reptiles comprise four snakes, [nb 6] five lizards, [nb 7] and three crocodilians.
Other common names for P. fasciatus include blue-tailed skink (for juveniles) and red-headed skink (for adults). It is technically appropriate to call it the American five-lined skink to distinguish it from the African skink Trachylepis quinquetaeniata (otherwise known as five-lined mabuya) or the eastern red-headed skink to distinguish it from its western relative Plestiodon skiltonianus ...