Across China: Turtle, bird, dinosaur tracks reveal NW China's Cretaceous past

LANZHOU, Sept. 7 (Xinhua) -- A scientific research team on Saturday revealed the discovery of fossilized tracks left by prehistoric creatures in northwest China dating back hundreds of millions of years, including tracks left by birds, turtles and dinosaurs.

The fossils were buried in red sandstone dating back to the Lower Cretaceous period in Yongjing County of the Linxia Hui Autonomous Prefecture, Gansu Provin