Tiny ancient primate fossil revealed

A mouse-sized fossil from China has provided remarkable new insights into the origin of primates.

At 55 million years old, it represents the earliest known member of this broad group of animals that includes humans.

Scientists have called the diminutive creature Archicebus, which roughly translates as "ancient monkey".

In this clip, Dr Xijun Ni from the Chinese Academy of Sciences in Beijing, describes the specimen.