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A Feathered Dinosaur Tail with Primitive Plumage Trapped in Mid-Cretaceous Amber (cell.com)
37 points by bowenfreddy 3478 days ago
1 comments

Hi-Res image: http://www.cell.com/cms/attachment/2075122016/2069586830/gr1...

"The tail ... is visible to the naked eye as an elongate and gently curved structure (length = 36.73 mm). A dense covering of feathers protrudes from the tail, obscuring underlying details, so Synchrotron Radiation (SR) X-ray phase-contrast μCT scanning was employed to examine concealed osteological and soft tissue features (Figure 1). Soft tissues—presumably muscles, ligaments, and skin—are visible sporadically through the plumage, clinging to the bones in a manner suggestive of the desiccation common to other vertebrate remains in amber"

"The close contact between the skin and surrounding amber, paired with the mummified external appearance of the skin where it has shriveled across the surface of the vertebrae, suggest one of two scenarios. Either the tail bearer was dead and partially desiccated before encapsulation, or else it rapidly dried due to resin interactions"