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Nature. 2004 Jun 10;429(6992):621.

Palaeontology: pterosaur embryo from the Early Cretaceous.

Author information

  • 1Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, PO Box 643, Beijing 100044, China. xlinwang@263.net

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.

PMID:
15190343
[PubMed - indexed for MEDLINE]
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