What killed the dinosaurs? Scientist Wang Haijun thinks the answer may be buried inside a 980-foot-long ravine in the Chinese countryside 415 miles southeast of Beijing where hundreds of the creatures may have huddled in the final moments before their extinction.
The fossils here — more than 15,000 fractured, mangled and blackened bones from about 65 million years ago in the late Cretaceous period right before they went extinct — support theories of a catastrophe.
What’s even more intriguing is that there are seven distinctive “floors” of dead dinosaurs in the pit. Some of the soil is yellow, other layers are red clay, which Xu said seems to show that “there wasn’t just one event. The dinosaur bones are preserved in different layers, suggesting they were killed in several different times,” he said.
via China spends billions to study dinosaur fossils at sites of major discoveries – washingtonpost.com.