Flightless feathered dinosaur, fuzzy raptor (Sinornithosaurus), lived in China 124–122 million years ago.
Fossils found more recently in China also have feathers, but ones adapted for warmth and display, not flight.
They are definitely dinosaurs and the closest relatives to Archaeopteryx
yet discovered, so they throw into question whether Archaeopteryx
was a bird after all.
On balance, the evidence still places Archaeopteryx
with the birds, but only new discoveries will clarify the evolution of the bird family tree.