A toothy Mayan skull, made of limestone and in the shape of a monkey head, is set to go on display at a Maya exhibition at the Royal Ontario Museum in Toronto Canada.

But unlike the famous crystal skulls, which are widely regarded as fake, this one is believed to be real.

The skull is roughly life-size and small enough that you can hold it in your hands. It has eight inlaid white teeth made of shell in two groups of four, with a black tooth made of iron pyrite in the middle. The mouth of the skull is wide open, and the eyes may have originally had shells in them....