A team of researchers affiliated with several institutions in China and Canada has identified a turtle egg fossil from the Cretaceous period that contains an embryo. In their paper published in Proceedings of the Royal Society B, the group describes where the egg was found and what they learned about it during their examination.
Click here for original story, Thick-shelled turtle egg with embryo still inside from the Cretaceous period found in China
Source: Phys.org