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Mammals are also known to reside at high altitude and exhibit a striking number of adaptations in terms of morphology, physiology and behaviour. The Tibetan Plateau has very few mammalian species, ranging from wolf , kiang (Tibetan wild ass), goas , chiru (Tibetan antelope), wild yak , snow leopard , Tibetan sand fox , ibex , gazelle ...
Ankylosaurs and glyptodont mammals both had spiked tails. [73] The sauropods and giraffes independently evolved long necks. [74] The horned snouts of ceratopsian dinosaurs like Triceratops have also evolved several times in Cenozoic mammals: rhinos, brontotheres, Arsinoitherium, and Uintatherium. [75] Rhynchosaur teeth resemble that of the ...
The sea otter has the densest fur of modern mammals. In addition to the glandular skin covered in fur found in most modern mammals, modern and extinct synapsids possess a variety of modified skin coverings, including osteoderms (bony armor embedded in the skin), scutes (protective structures of the dermis often with a horny covering), hair or ...
Elaine V. Fuchs is an American cell biologist known for her work on the biology and molecular mechanisms of mammalian skin and skin diseases, who helped lead the modernization of dermatology. Fuchs pioneered reverse genetics approaches, which assess protein function first and then assess its role in development and disease.
Pachydermata (meaning 'thick skin', from the Greek παχύς, pachys, 'thick', and δέρμα, derma, 'skin') is an obsolete order of mammals described by Gottlieb Storr, Georges Cuvier, and others, at one time recognized by many systematists. The term pachyderm is commonly used to describe elephants, rhinoceroses, hippopotamuses and tapirs ...
Mammalian skin is much thicker than that of birds and often has a continuous layer of insulating fat beneath the dermis. In marine mammals, such as whales, or animals that live in very cold regions, such as the polar bears, this is called blubber. Dense coats found in desert endotherms also aid in preventing heat gain such as in the case of the ...
Note the gliding adaptations: flaps of skin on the legs, feet, sides of the body, and on the sides of the head. Ptychozoon flying geckos. There are six species of gliding gecko, of the genus Ptychozoon, from Southeast Asia. These lizards have small flaps of skin along their limbs, torso, tail, and head that catch the air and enable them to ...
Adaptationism is a scientific perspective on evolution that focuses on accounting for the products of evolution as collections of adaptive traits, each a product of natural selection with some adaptive rationale or raison d'etre.