Scientists at Jilin University recently uncovered the earliest record of the undulated structure of dinosaur tooth enamel.

吉林大学的科学家发现恐龙牙釉质波纹构造的最古老记录。

The discovery will help scientists to improve research in the evolution, eating habits and living environments of dinosaurs.

The bird-footed Changchun dinosaur was tiny, only one meter in body length, and made one of the best preserved bird-footed dinosaur fossils.