The Zhaoying Formation is a Coniacian geologic formation in Henan Province, China. Fossil dinosaur eggs of Ovaloolithus sp. have been reported from the formation.

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Further reading

  • Y. Li, Y. Liu, X. Chen and G. Zhao. 1996. Dinosaurian Embryo II: Young Dinosaur-bones in Ovaloolithus. Earth Science - Journal of China University of Geosciences 21(6):608-610