Radiocarbon analysis put the date at 10,000 to 10,400 years ago.
Radiocarbon analysis established they were about 1,000 years old.
The radiocarbon analysis of tissue from the body was considered the most definitive test that could be conducted.
The initial radiocarbon analysis was apparently based on contaminated samples, the researchers said.
Radiocarbon analysis of the charcoal determined the age of the site.
If so, any residue of charcoal should give a reliable date through radiocarbon analysis.
Radiocarbon analysis dated the body to between 1050 and 1385, and later tests suggested it to be that of a man over 34 years old.
Radiocarbon analysis dated the remains from about 250 years ago to more than 6,000 years ago.
In extreme cases, items may be subjected to a microscope, x-ray, radiocarbon dating or chemical analysis.
This has been dated by radiocarbon analysis of the charcoal from their fires to around 5700 BC.