Science News has a look at the latest paleontological fashion: what may be the remains of pigment in fossilized feathers 100 million years old. The material in question is believed to be black melanin, on the evidence of its similarity in scanning-microscope images to the modern pigment. The researchers are hopeful of identifying other varieties of melanin, which provide red or yellow coloration; and also possibly of spotting fossilized nanostructures of melanin that create iridescent patterns in some modern animals.
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