The volunteer archaeologist's find is being hailed as a major discovery.
The relatively lightly built skeletons of modern humans may have been the result of a shift away from a nomadic lifestyle to a more settled one.
The skeletal fragment is about 8,000 years old and may have once belonged to an infant or a small child.
Foot bones more than 40 million years old, from Antarctica, reveal a creature standing more than 6 and a half feet tall.
Dozens of fighters found in Denmark were collected and ritually mutilated after spending months on the battlefield, archaeologists say.
A sip of unpasteurized sheep or goat's milk may have spelled doom for a medieval Italian man.
Iron pin may have held in place a wood or bone prosthesis.
The bones of seven huge dinosaurs that each weighed more than a dozen elephants and had femurs bigger than a human adult have been discovered in Argentina.
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