This slab of Cretaceous rock contains the remains of 30 dinosaur infants and one older individual – possibly a babysitter.
Discovered in the Yixian formation in north-eastern China, all 31 fossilised dinosaurs were members of a herbivore species called Psittacosaurus lujiatunensis. This fossil specimen was originally described in 2004, but researcher Brandon Hedrick of the University of Pennsylvania in Philadelphia was inspired to investigate it further after seeing a photo of the find.
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Fossil dinosaur nursery includes babysitterpsittacosaurus lujiatunensis babysitter yixian dinosaur nursery
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