Sometimes the skeletons in burials are covered in beads that must have decorated the clothing of the dead individuals. One of the most remarkable pieces of such evidence concerning clothing comes from the 28,000-year-old Gravettian site of Sungir, one of the most northerly sites on the Russian plain, where three burials were found. One of the burials, that of a 55-to-60-year-old man, wore pierced polar fox teeth, two dozen ivory bracelets carved from the tusks of woolly mammoths, and ivory beads sewn on the clothes in rows. He wore trousers and a shirt which had no opening in front and must have been put on over the head. The pants were sewn to the leather footwear making up a single piece, as was the case with some later tribes of North Siberia and North America.