Gourt > Science > Biology > Flora and Fauna > Animalia > Chordata > Reptilia (21)
Reptiles are tetrapods and amniotes, animals whose embryos are surrounded by an amniotic membrane. Today they are represented by four surviving orders:
- Crocodilia (crocodiles, caimans and alligators): 23 species
- Rhynchocephalia (tuataras from New Zealand): 2 species
- Squamata (lizards, snakes and amphisbaenids ("worm-lizards")): approximately 7,600 species
- Testudines (turtles): approximately 300 species
Reptiles are found on every continent except for Antarctica, although their main distribution comprises the tropics and subtropics. Though all cellular metabolism produces some heat, modern species of reptiles do not generate enough to maintain a constant body temperature and are thus referred to as "cold-blooded" (ectothermic). (See the Leatherback Sea Turtle for an exception: a reptile that elevates its body temperature well above that of its surroundings.) Instead they rely on gathering and losing heat from the environment to regulate their internal temperature, e.g, by moving between sun and shade, or by preferential circulation — moving warmed blood into the body core, while pushing cool blood to the periphery. In their natural habitats, most species are adept at this, and can maintain core body temperatures within a fairly narrow range, comparable to that of mammals and birds, the two surviving groups of "warm-blooded" animals. While this lack of adequate internal heating imposes costs relative to temperature regulation through behavior, it also provides a large benefit by allowing reptiles to survive on much less food than comparably-sized mammals and birds, who burn much of their food for warmth. While warm-blooded animals move faster in general, an attacking lizard, snake or crocodile moves very quickly. A herpetologist is a zoologist who studies reptiles and amphibians.
More on [ Reptile ]
Reptiles :: Reptiles and Amphibians
Reptiles and Amphibians :: Pets
Herpetology :: Chordates
Do meu brother @lgmsampaio: "Julian Casablancas sempre me deixa de bom humor". The Strokes, Reptilia ♫ http://blip.fm/~hh2ll
celso14 (LuÃÂs Celso Jr.) Tue, 08 Dec 2009 13:30:17 -0000
Do meu brother @lgmsampaio: "Julian Casablancas sempre me deixa de bom humor". The Strokes, Reptilia ♫ http://blip.fm/~hh2ll
@Melanie_Collins @Melanie_Collins Reptilia is classic, glad PP rocked I'd love to see them live, I think theyre on tv this week
drewm_55 (D) Tue, 08 Dec 2009 12:00:05 -0000
@Melanie_Collins @Melanie_Collins Reptilia is classic, glad PP rocked I'd love to see them live, I think theyre on tv this week
#MusicMonday The XX- Night Time, The Strokes- Reptilia, Miike Snow- Black & Blue, Arcade Fire- Rebellion (Lies), The Used- Born to Quit.
Melanie_Collins (Melanie Collins) Tue, 08 Dec 2009 07:11:38 -0000
#MusicMonday The XX- Night Time, The Strokes- Reptilia, Miike Snow- Black & Blue, Arcade Fire- Rebellion (Lies), The Used- Born to Quit.
@alliblues No, you like the critic favs. Id guess crowds' are 12:51 & Reptilia. Which were both still good songs. Room on Fire > Is This It.
marshallw (Dirk Diggler) Tue, 08 Dec 2009 04:02:30 -0000
@alliblues No, you like the critic favs. Id guess crowds' are 12:51 & Reptilia. Which were both still good songs. Room on Fire > Is This It.
Y al son de Reptilia terminamos el semestre del infierno..Que viva la ingenieria ¡Que viva! Ahora si a hibernar como buen vaco desvelado n_n
Bost3rio (Romeo Murillo) Tue, 08 Dec 2009 03:59:10 -0000
Y al son de Reptilia terminamos el semestre del infierno..Que viva la ingenieria ¡Que viva! Ahora si a hibernar como buen vaco desvelado n_n
I favorited a YouTube video -- The Strokes-Reptilia (Live MTV) http://www.youtube.com/watch?v=05YoMhncbls&feature=autoshare_twitter
drikolhopes (Adriano Lopes) Tue, 08 Dec 2009 02:44:57 -0000
I favorited a YouTube video -- The Strokes-Reptilia (Live MTV) http://www.youtube.com/watch?v=05YoMhncbls&feature=autoshare_twitter
Class Reptilia - Outline of the taxonomy of turtles, snakes and lizards, alligators and crocodiles, with information on selected subgroups and species.
Discover Canada's Aquatic Reptiles - All about Canada's snakes, lizards, and turtles.
Meta Description: [ Discover Canada’s aquatic reptiles; the snakes, lizards, and turtles
that live in your backyard. Find out how snakes smell and learn about the different parts of a turtles shell. ]
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EMBL Reptile Database - An information resource on reptile taxonomy with a focus on the species level.
Jurassosaur's Reptipage - Short articles on the biology of reptiles.
Meta Description: [ This site is devoted to the study of reptiles and to the dispelling of the many myths that surround them. ]
Reptile Image Gallery - Small images of snakes, crocodilians, and lizards by Adrian Warren.
Meta Description: [ Image Galleries of Reptiles, Snakes, Komodo Dragon, Crocodile, Cayman, Lizards, Pygmy Chamaeleon, Anolis lizard, Chamaeleon, Iguana, by Adrian Warren ]
Reptiles in Hiroshima - Information and photos of the 4 species of turtles, 4 lizards, and 8 snakes in Hiroshima Prefecture, Japan.
Reptiles of Australia - Checklist, photo gallery, and range maps.
Meta Description: [ A guide to the reptiles of Australia featuring many pictures, maps and lists. ]
Reptiles of Tasmania - An outstanding guide to Tasmania's reptiles, from the Tasmanian Parks and Wildlife Service.
Meta Description: [ Meet Tasmania's lizards, snakes and frogs. ]
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Snakes and Other Reptiles - World Book Encyclopedia's feature on reptiles.
Turtle, Tuatara, Crocodile Checklist - Checklist of crocodilians, tuatara, and turtles of the world: A web version of the long out-of-print edition originally published by the Association of Systematics Collections in 1989.
Meta Description: [ Checklist of crocodilians, tuatara, and turtles of the world: A www version of the long out-of-print edition originally published by the Association of Systematics Collections in 1989. ]
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