... fossilised ape skull. The ape was called a "Proconsul". Her husband was called Louis, and he was a fossil expert as well. They were both archaeologists, and they taught us lots about how we evolved. Evolution is how apes turned more and more into people, and soon the apes turned into stone age people, and then the stone age people turned into us. It only took a few million years. Now I know two fossil experts called Mary, but Mary Anning is still my favourite.
[Image from http://leakeyfoundation.org/about-us/leakey-family/mary-leakey/]