Chinese archaeologists with the Institute of Vertebrate Paleontology and Paleoanthropology of the Chinese Academy of Sciences, have again unearthed dinosaur fossils at a site in Laiyang City, east China's Shandong Province. The fossils stemming from the Cretaceous period are some 80 million years old.

Scientists have sealed off the fossils and their surrounding rocks with gypsum for further restoration and research. The largest piece among them, the remains of a humerus, or upper arm bone, is over 60 cm long, said Professor Wang Qiang.

"Based on the pattern of the fossils, we have arrived at the rational conclusion that those dinosaurs were buried due to an abrupt disaster," said Professor Wang.