Police believe the bones could confirm that millionaire died in the accident, with DNA test results due next week. Bone fragments previously found in the area were either not human or were too small for DNA analysis.
Fossett, 63, who went missing in September 2007, is believed to have died instantly when his plane flew into a mountain, though his remains have not been found.
Along with the bones, searchers discovered tennis shoes and credit cards bearing animal teeth marks, supporting the theory that animals dragged the adventurer's body away from the crash site. Fossett's driving license and a $100 bill were also found.
The millionaire went missing shortly after taking off from a Nevada ranch in a single-engine aircraft. Despite a massive search operation, which cost $1.6 million and covered an area of 51,800 square km (20,000 square miles), no signs of the crash were found.
Fossett was officially declared dead in February and his widow, Peggy, was awarded his $10 million estate. In late September 2008, a hiker stumbled across the plane's wreckage, Fossett's pilot license and $1,000 in cash, prompting the renewed efforts to find his remains.
Fossett became famous for setting records in high-tech balloons, gliders, jets and boats, and in 2002 become the first person to circumnavigate the world solo in a balloon.
