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Caring parents

发布时间:2019-03-02 10:08:00来源:未知点击:

A FOSSIL of an adult dinosaur surrounded by 34 juveniles has provided the most compelling evidence yet that they looked after their young after they hatched. Fossil fragments have hinted that allosaurs and maiasaurs may have been caring parents. What makes this 125-million-year old Psittacosaurus fossil from Liaoning province in China more convincing is that the skeletons are complete, and are crowded together with their legs tucked under and heads raised, indicating that they were buried alive rather than swept together after death (Nature, vol 431,