4-winged fossil found in Liaoning challenges single origin of dinosaur flight

Scientists have unveiled an exceptionally well-preserved 100-million-year-old fossil of a small, feathered dinosaur in northeastern China that could reshape our understanding of how dinosaurs took to the skies. The newly discovered species, named Norellraptor barsboldi, is a four-winged predatory dinosaur measuring 57cm (22 inches) long. Belonging to the microraptorines – small dinosaurs with feathers and wings closely related to birds – the creature offers fresh evidence that flight evolved...