Paleontologists have examined the 160-million-year-old fossils of Anchiornis huxleyi, a species of non-avian theropod dinosaur from the Late Jurassic Tiaojishan Formation in northeastern China, reserved with their feathers and found that these dinosaurs had lost the ability to fly. This is an extremely rare finding that offers a glimpse into the functioning of creatures that lived 160 million years ago, and their impact on the evolution of flight...
