"Homo floresiensis", which lived about 100,000–12,000 years ago has been nicknamed "hobbit" for its small size. Its size may be a result of island dwarfism, the tendency for large mammals to evolve smaller forms on islands. "H. floresiensis" is intriguing both for its size and its age. It is a concrete example of a recent species of the genus "Homo" that shows derived traits not shared with modern humans. In other words, "H. floresiensis" share a common ancestor with modern humans, but split from the modern human lineage and followed a different evolutionary path. The main find was a skeleton believed to be a woman of about 30 years of age. Found in 2003 it has been dated to approximately 18,000 years old. The living woman was estimated to be one meter in height, with a brain volume of just 380 cm This is small for a chimpanzee and less than a third of the "H. sapiens" average of 1400 cm.