Microsyops latidens is a species of prehistoric primate from early Eocene. It is roughly the size of a racoon. It was part of a group of mammals known as stem primate. It roamed the Earth for about 500,000 years before becoming extinct some 54 million years ago.
A new research studying the fossils of Microsyops latidens discovered cavities. This is the oldest known cavities ever found in a mammal. The discovery was made from the large amount of fossilized teeth unearthed in Wyomingâ€™s Southern Bighorn Basin in the 1970s. The cause of the cavity is found to be change in diet to more fruit or sugar-rich foods.