Reading Part 1 A team of paleontologists has discovered ancient color-producing sacs in
fossilized feathers from the Jehol site in northeastern China that are more than
100 million years old. These pigment-packed organelles, called melanosomes,
have only been found in fossilized bird feathers before now.
The team discovered the melanosomes in fossils of the suborder Theropoda,
the branch of the dinosaur family tree to which the flesh-eating Velociraptor
and Tyrannosaurus belong. However, it was not in these two iconic dinosaurs
that the organelles were found, but in smaller species that ran around low to
the ground with tiny feathers or bristles distributed across their bodies.
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