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Hace 1 día · 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 ). As of May 2023, about 12,000 living species ...
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.
22 de may. de 2024 · Los reptiles son un grupo de vertebrados compuestos por más de 20.000 especies (incluyendo a las aves). Sin embargo, hoy en día las aves siguen siendo consideradas una Clase aparte por la gran mayoría de bases de datos taxonómicas.
Hace 4 días · Squamata ( / skwæˈmeɪtə /, Latin squamatus, 'scaly, having scales') is the largest order of reptiles, comprising lizards and snakes. With over 12162 Species, [2] it is also the second-largest order of extant (living) vertebrates, after the perciform fish.
Hace 1 día · Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Cryptodira (hidden necked turtles), which differ in the way the head retracts. There are 360 living and recently extinct species of turtles, including land-dwelling tortoises and freshwater terrapins.
21 de may. de 2024 · Reptiles, also known as Class Reptilia, Class Sauropsida, or merely sauropsids, are ectothermic ("cold-blooded" -- though this term has now fallen out of fashion) animals covered in scales. There are over 8,200 reptile species, about 50% more than their relatives, the mammals.
17 de may. de 2024 · tetrapod, (superclass Tetrapoda), a superclass of animals that includes all limbed vertebrates (backboned animals) constituting the classes Amphibia , Reptilia , Aves , Mammalia , and their direct ancestors that emerged roughly 397 million years ago during the Devonian Period.
