Palaeontology: Pterosaur embryo from the Early Cretaceous

  title={Palaeontology: Pterosaur embryo from the Early Cretaceous},
  author={Xiaolin Wang and Zhonghe Zhou},
Dinosaur embryos have been discovered all over the world, but so far no pterosaur embryos have been reported. Here we describe a Chinese fossil from the Early Cretaceous period containing an embryo that is unambiguously a pterosaur. The embryonic skeleton, which is exquisitely preserved in its egg, is associated with eggshell fragments, wing membranes and skin imprints. This discovery confirms that pterosaurs were egg-layers and sheds new light on our understanding of pterosaur development. 

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