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Hace 17 horas · See text for extinct groups. Reptiles, as commonly defined, are a group of tetrapods with an ectothermic ('cold-blooded') metabolism and amniotic development. Living reptiles comprise four orders: Testudines ( turtles ), Crocodilia ( crocodilians ), Squamata ( lizards and snakes ), and Rhynchocephalia (the tuatara ).
9 de may. de 2024 · Learn about reptiles, the class of vertebrates with scales, amniotic eggs, and internal fertilization. Explore the diversity, evolution, and ecology of living and extinct reptiles, such as turtles, lizards, snakes, and crocodiles.
10 de may. de 2024 · Learn about lizards, a diverse group of reptiles with more than 5,500 species, ranging from tiny geckos to giant monitors. Find out how lizards are classified, adapted, and interact with humans and their environment.
Hace 5 días · Snake, any of more than 3,400 species of reptiles distinguished by their limbless condition and greatly elongated body and tail. They are classified with lizards in the order Squamata and represent a lizard that, over the course of evolution, has undergone structural reduction, simplification, and loss as well as specialization.
Hace 3 días · The largest living species of turtle (and fourth-largest reptile) is the leatherback turtle, which can reach over 2.7 m (8 ft 10 in) in length and weigh over 500 kg (1,100 lb). The largest known turtle was Archelon ischyros , a Late Cretaceous sea turtle up to 4.5 m (15 ft) long, 5.25 m (17 ft) wide between the tips of the front ...
Hace 3 días · Squamata ( / skwæˈmeɪtə /, Latin squamatus, 'scaly, having scales') is the largest order of reptiles, comprising lizards and snakes. With over 11,500 species, [2] it is also the second-largest order of extant (living) vertebrates, after the perciform fish.
15 de may. de 2024 · What Are Reptiles? Reptiles are a class of vertebrate animals that share similar characteristics such as scaly skin, cold-bloodedness, and the ability to lay eggs. They are found in all regions of the world except for the polar and tundra regions, those of extremely low temperatures.
