The dinosaur egg fossils in China and their ecostratigraphy

The dinosaur egg fossils recognized in China are characterized by widespread occurrence in stratigraphic horizons.diverse types and well-preserved original morphology:in places,they are found to be associated with the skeletal remains and other fossils. The geographic distribution of these egg fossils is herein outlined. Twenty-one species, thirteen genera and nine families heve been distinguished. The approaches focus on palaeoecological features and arrangement of the egg fossils,ways of laying eggs and paragenetic relationships between various types of dinosaur egg fossils and between the egg fossils and skeletal remains. Finally the direct indicator significance of the dinosaur egg fossils in the division and correlation of the Late Cretaceous strata is also explored in this paper.