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  • Title: Palaeontology: pterosaur embryo from the Early Cretaceous.
    Author: Wang X, Zhou Z.
    Journal: Nature; 2004 Jun 10; 429(6992):621. PubMed ID: 15190343.
    Abstract:
    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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