Tom Nichols
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4 days ago · 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 ).
2 days ago · The largest living reptile and most aggressive of all crocodiles. It is a big-headed species and has a relatively broad snout, especially when older. The coloration is pale yellow with black stripes when young but dark greenish-drab coloured as adults.
Jul 11, 2024 · All snakes lack external limbs, but not all legless reptiles are snakes. Certain burrowing lizards may have only front or hind limbs or be completely legless. Unlike lizards, snakes lack movable eyelids, which results in a continuous and often disconcerting stare. Snakes also lack external ear openings.
2 days ago · Scolecophidia Cope, 1864. Approximate world distribution of snakes, all species. Snakes are elongated, limbless reptiles of the suborder Serpentes ( / sɜːrˈpɛntiːz / ). [2] Like all other squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales.
Jul 4, 2024 · Reptile Environments: Reptiles thrive in deserts, rainforests, grasslands, wetlands, mountains, and urban areas, showcasing remarkable adaptability. Habitats of Reptiles: Reptiles occupy terrestrial, aquatic, and arboreal habitats, ranging from tropical rainforests to arid deserts and temperate forests.
Jul 5, 2024 · Gecko, any of more than 1,000 species of lizards making up six families of the suborder Gekkota. Geckos are mostly small, usually nocturnal reptiles with a soft skin. They also possess a short stout body, a large head, and typically well-developed limbs.
Jul 16, 2024 · Crocodiles are any of about 27 species of generally large, ponderous, amphibious animals of lizard-like appearance and carnivorous habit belonging to the reptile order Crocodylia. They have powerful jaws, many conical teeth, and short legs.
