|A 99-million-year-old wing from a toothed bird preserved in amber. The specimen includes a claw and a pale spot on the plumage.|
The 99-million-year-old wings -- nicknamed "angel wings" and "Rose" by the researchers -- include the first examples of hair follicles and feather arrangements from the Cretaceous Period, according to the paper, published in the journal Nature Communications.
|The "angel wing," under a compound microscope, show pigment banding in feather barbules, and the outline of the Cretaceous bird's claw.|
|An enantiornithine is partially ensnared by tree resin, based on the "angel wing" specimen.|
McKellar, lead author Lida Xing and their colleagues found the fossils at a site in the Kachin Province of Myanmar. They examined the structure and arrangement of the bones and feathers in the fossils using techniques such as synchrotron X-ray micro CT scanning.
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