China is a nation abundant in fossils of dinosaur eggs in the world. There are 14 provinces where fossils of dinosaur eggs have been discovered, in which those found in Nanyang of Henan Province have the greatest influence on geologic research worldwide.    

Nanyang is one of the earliest regions where dinosaur egg fossils were found in China. As early as the 1920s, some strange stones were found by local peasants, who call these stones "stone gallbladder", "stone eggs", "stone pills" or "stone balls". The Nanyang oryctocoenose of dinosaur eggs is characterized by large in distribution area and concentrated in buried storage. By far, thousands of pieces of fossilized eggs have been found. It is estimated that the whole reserve can exceed tens of thousands, which is rare all over the world. The size of fossils varies from small as hen eggs to large as rice bowls. They are mainly oblate and sometimes in the shape of rugby football. These dinosaur egg fossils are also preserved in perfect condition, without suffering from damage and destruction in later period of the whole evolution process. Except for some dents on the surface due to extrusion pressure of terrain exerted on few eggshells, most egg fossils are kept as integral as original, which is really unparalleled in the world.

The discovery of abundant oryctocoenoses of dinosaur eggs, reputed as "of epoch-making significance" and the "ninth wonder in the world", provides extremely precious materials for geologic research. Specialists, scholars and tourists, far and wide, home and abroad, come in endless streams for appreciation and exploration. The Nanyang fossils of dinosaur eggs have been on show in many large cities both at home and abroad.