Key site: Callao Cave on Luzon island in the Philippines, where fossils of Homo luzonensis were found. Photo: AFP/Getty Images
A previously unknown species of human that lived at the same time our ancient ancestors were colonising Europe has been discovered in the Philippines.
Bones and teeth of the "hominin" were found in Callao Cave on Luzon, the largest island in the Asian archipelago. They contain a mixture of old and new features that have excited scientists and threaten to overturn accepted theories of human evolution.
Hominins are members of the human family tree more closely related to one another than to apes.
Today, only one species of this group remains, Homo sapiens, to which everyone on Earth belongs.