Bizarre fossil may have been an entirely new type of life / Archaeologists uncover the oldest known partial face fossil of a human ancestor in western Europe / Million-year-old face fossil sheds new light on ancient human migrations / New fossil discovery of an early human ancestor reveals that it walked upright, just like humans / Strange 1.4 million-year-old fossil traced to previously unknown human relative 'nutcracker man' / Fossil study reveals oldest-known evolutionary 'arms race' / 3D fossil scans investigate the origins of bipedal locomotion in human evolution