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  2. Reptile scale - Wikipedia

    en.wikipedia.org/wiki/Reptile_scale

    Reptile scale. Reptile skin is covered with scutes or scales which, along with many other characteristics, distinguish reptiles from animals of other classes. They are made of alpha and beta-keratin and are formed from the epidermis (contrary to fish, in which the scales are formed from the dermis). The scales may be ossified or tubercular, as ...

  3. Reptile - Wikipedia

    en.wikipedia.org/wiki/Reptile

    Reptiles, from Nouveau Larousse Illustré, 1897–1904, notice the inclusion of amphibians (below the crocodiles). In the 13th century, the category of reptile was recognized in Europe as consisting of a miscellany of egg-laying creatures, including "snakes, various fantastic monsters, lizards, assorted amphibians, and worms", as recorded by Beauvais in his Mirror of Nature. [7]

  4. Scale (zoology) - Wikipedia

    en.wikipedia.org/wiki/Scale_(zoology)

    Keeled scales of a colubrid snake (banded water snake; Nerodia fasciata) In zoology, a scale (Ancient Greek: λεπίς, romanized: lepís; Latin: squāma) is a small rigid plate that grows out of an animal 's skin to provide protection. In lepidopterans (butterflies and moths), scales are plates on the surface of the insect wing, and provide ...

  5. Amphibian - Wikipedia

    en.wikipedia.org/wiki/Amphibian

    Amphibians are ectothermic, anamniotic, four-limbed vertebrate animals that constitute the class Amphibia. In its broadest sense, it is a paraphyletic group encompassing all tetrapods excluding the amniotes (tetrapods with an amniotic membrane, such as modern reptiles, birds and mammals).

  6. Tetrapod - Wikipedia

    en.wikipedia.org/wiki/Tetrapod

    Skin breathing, known as cutaneous respiration, is common in fish and amphibians, and occur both in and out of water. In some animals waterproof barriers impede the exchange of gases through the skin. For example, keratin in human skin, the scales of reptiles, and modern proteinaceous fish scales impede the exchange of gases.

  7. Rare skin fossil is oldest by 130 million years

    www.aol.com/rare-skin-fossil-oldest-130...

    The fragment of fossilized reptile skin was found in a limestone cave in Oklahoma, United States, and is at least 130 million years older than the oldest previously known skin fossil.

  8. Snake scale - Wikipedia

    en.wikipedia.org/wiki/Snake_scale

    Elaborately shaped scales on the head of a Vine snake, Ahaetulla nasuta. Scales of a black-tailed rattlesnake (Crotalus molossus). Snakes, like other reptiles, have skin covered in scales. [1] Snakes are entirely covered with scales or scutes of various shapes and sizes, known as snakeskin as a whole. A scale protects the body of the snake ...

  9. Skin - Wikipedia

    en.wikipedia.org/wiki/Skin

    Amphibian skin plays key roles in everyday survival and their ability to exploit a wide range of habitats and ecological conditions. [9] On 11 January 2024, biologists reported the discovery of the oldest known skin, fossilized about 289 million years ago, and possibly the skin from an ancient reptile. [10] [11]

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