永利总站线路:Flying dinosaur needed the brain of a modern bird

 作者:姚糙薅     |      日期:2019-03-03 02:03:00
By Jeff Hecht FLIGHT was built into the brain as well as the body of Archaeopteryx. The oldest known bird shares many skeletal features with its dinosaur ancestors, such as teeth and a long bony tail. Yet a CAT scan reveals that Archaeopteryx had the large brain and optic lobes of modern birds, not the brain of a dinosaur, says Angela Milner of London’s Natural History Museum. It is relatively easy to study how a fossil skeleton may have been adapted for flight. However, navigating in a three-dimensional environment also requires a specialised brain. Modern birds have an enlarged brain,