Search results
Results from the WOW.Com Content Network
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 ...
Herpetology (from Greek ἑρπετόν herpetón, meaning "reptile" or "creeping animal") is a branch of zoology concerned with the study of amphibians (including frogs, salamanders, and caecilians (Gymnophiona)) and reptiles (including snakes, lizards, turtles, crocodilians, and tuataras).
Sauropsida (Greek for "lizard faces") is a clade of amniotes, broadly equivalent to the class Reptilia, though typically used in a broader sense to also include extinct stem-group relatives of modern reptiles and birds (which, as theropod dinosaurs, are nested within reptiles as more closely related to crocodilians than to lizards or turtles). [2]
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.
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 ...