A small amount of evidence suggests that with its existing sibling species, like crocodiles and birds, dinosaurs also know to look after his cubs in the hatchery. Now, in China's Liaoning Province Ornithischia newly discovered dinosaur Psittacosaurus sp.'s A very compelling fossil specimens, provided us with more and more reliable evidence. We can see from the specimens, an adult individual and 34 pups were squeezed in a half-square-meter area. The posture of these animals live shows, they are buried alive when a sudden, this scene reflects a real-time.