Dinosaur eggs in their original nest depression are still intact. The four eggs seen here were evidently addled (rotten) and did not hatch during the late Cretaceous some 70 million years ago. The fracturing seen on the shell surface is due to the fossilization process. There is no evidence of predation by egg scavengers. Dinosaur eggs are most plentiful in China where many different kinds have been discovered, but generally they are not well-documented.

This nest of four is selected as the best example of fossilized eggs in our collections. Specimens of other dinosaur eggs in the museum’s collections are more fragmentary but like these will provide opportunities for study by staff or visiting scholars.
– Bruce Erickson, Fitzpatrick Chair of Paleontology