Around 4,500 years ago, ancient Egyptians carved the Great Sphinx of Giza out of limestone in the Mokattam rock formation. Little did they know, the material th

Around 4,500 years ago, ancient Egyptians carved the Great Sphinx of Giza out of limestone in the Mokattam rock formation. Little did they know, the material they were digging through preserved something even more archaic: fossils of a long-extinct crocodile. [↧](https://t…