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Reptilian scales and bird feathers are made of the same substance; keratin. Bird feathers evolved from degenerated dinosaurian (coelurosaurian?) scales. The feathers were probably first used for insulation or were perhaps used en massealong the arms to form 'traps' for catching insects.

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13y ago
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11y ago

''A small minority of researchers have claimed that the simple, filamentous "protofeather" structures are simply the result of the decomposition of collagen fiber under the dinosaurs' skin or in fins along their backs, and that species with unquestionable feathers, such as oviraptorosaurs and dromaeosaurus' are not dinosaurs at all, but true birds unrelated to dinosaurs. However, a majority of studies have concluded that feathered dinosaurs are in fact dinosaurs, and that the simpler filaments of unquestionable theropods do in fact represent simple feathers. Some researchers have demonstrated the presence of color-bearing melanin in the structures which would be expected in feathers but not collagen fibers. Others have demonstrated, using studies of modern bird decomposition, that even advanced feathers appear filamentous when subjected to the crushing forces experienced during fossilization, and that the supposed "protofeathers" may have been more complex than previously thought. Detailed examination of the "protofeathers" of sinosauropteryx prima showed that individual feathers consisted of a central quill (rachis) with thinner barbsbranching off from it, similar to but more primitive in structure than modern bird feathers.''

by Jerry BergmanApril 1, 2003Technical
  • author-jerry-bergman
  • dinosaur-bird-evolution
  • journal-of-creation
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Q: Where did birds feathers evolve from?
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