Reptile Definition–noun | 1. | any cold-blooded vertebrate of the class Reptilia, comprising the turtles, snakes, lizards, crocodilians, amphisbaenians, tuatara, and various extinct members including the dinosaurs. |
| 2. | (loosely) any of various anima
aad
ls that crawl or creep. |
| 3. | a groveling, mean, or despicable person. |
–adjective | 4. | of or resembling a reptile; creeping or crawling. |
| 5. | groveling, mean, or despicable. |
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From Dictionary |
Related topics from Britannicareptile
any member of the class Reptilia, the group of air-breathing vertebrates that have internal fertilization, amniotic development, and epidermal scales covering part or all of their body. The major ...
respiration
To survive on land, the reptiles had to develop a skin relatively impermeable to water, so as to prevent dessication, and hence not well suited for respiration. Thus, while a few specialized reptiles ...
integument
In the evolutionary sense, reptiles are the first truly terrestrial vertebrates, since they have dispensed with an aqueous environment for their larval development. Their main problem is to prevent ...
circulation
Unlike lungfishes and amphibians, reptiles depend entirely on their lungs for respiration. Gills and skin do not provide additional sources of oxygen. Only the crocodiles, however, truly approach ...
reproductive behaviour
Reptiles are the first vertebrates that, in an evolutionary sense, have evolved an egg that is truly independent of water. Indeed, many snakes and lizards have even gone beyond this stage and have ...
Triassic Period
Some of the earliest lizards may have been the first vertebrates to take to the air. Gliding lizards, such as the small Late Triassic Icarosaurus, are thought to have developed an airfoil from skin ...
Permian Period
Several important reptile lineages, which descended from several orders of relatively large amphibians, first appeared during the Permian Period. Although a few primitive and generalized reptile ...
sound reception
The living reptiles belong to four orders: the Squamata (lizards, snakes, and amphisbaenians), the Sphenodontida (tuataras), the Testudines (turtles), and the Crocodylia (crocodiles and alligators). ...
excretion
The main excretory product of birds and reptiles is uric acid. Since their glomeruli are relatively small, so also is their daily volume of urine. Not highly concentrated by mammalian ...
Carboniferous Period
The Carboniferous Period was the time of peak amphibian development and the emergence of the reptiles. Among the amphibians, the labyrinthodonts are represented by members of order Embolomeri, such ...
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Related articles from FindarticlesCurrent Events - Record reptile
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September 1, 2008 -- A guide to the reptiles and amphibians of Egypt. el Din, Sherif Baha. American U. in Cairo Press 2006 359 pages $34.95 Hardcover QL653... |
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