The American Museum Journal, Vol. 8
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Excerpt from The American Museum Journal, Vol. 8: January, 1908
Occasionally, however, fossil skeletons show some traces of the skin or cartilages of the animal. Quite commonly the scales of fish are pre served showing the entire outline of the body. Less often the skeletons of fossil reptiles or mammals show traces of the horny scales of the skin, cartilaginous ribs, the wind-pipe or other half-hardened parts, and in fossil fish from the Devonian shales of Ohio, even the soft muscular fibre has been preserved and can be recognized under the microscope by its characteristic structure.
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