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Plenty of folks not well-versed in the mud of paleontology think that all we have to go on is dusty old bones. For the most part, they are correct; however, this is misleading as there is a whole miniature but growing world of all sorts of things beyond bone that get preserved in fossil animals under the right conditions. Skin can be preserved as an impression in the sediments where a body was laid to rest, keratin sheaths can be turned to carbon sludge where they were when the animal was alive, and feather impressions can be made against all sorts of fine sedimentary deposits. Sometimes the conditions are especially perfect and allow the feathers and internal organs of an animal to be preserved in the rock for all time and a new example was just recently published on - meet the dog-faced raptor Daurlong!
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Art in Thumbnail belongs to - Caxela
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RESEARCH
Senter P, Kirkland JI, DeBlieux DD, Madsen S, Toth N (2012) Correction: New Dromaeosaurids (Dinosauria: Theropoda) from the Lower Cretaceous of Utah, and the Evolution of the Dromaeosaurid Tail. PLOS ONE 7(9): 10.1371/annotation/acddcd7d-0e2e-4abb-acbf-d5552fa286f8. doi.org/10.1371/annotation/ac...
Wang, X., Cau, A., Guo, B. et al. Intestinal preservation in a birdlike dinosaur supports conservatism in digestive canal evolution among theropods. Sci Rep 12, 19965 (2022). doi.org/10.1038/s41598-022-24...
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