An undated handout photo provided by Bonhams shows a Tyrannosaurus rex tooth discovered in the late summer of 2011 in Garfield County, Mont., which is one of the largest ever found.†The piece brought a new world auction record for the most expensive pre-historic tooth ever sold at public auction. The tooth sold for $56,250 during the December 11, 2011 Natural History auction at Bonhams in Los Angeles. (AP Photo/Cate Hurst, Bonhams)
An undated handout photo provided by Bonhams shows a Tyrannosaurus rex tooth discovered in the late summer of 2011 in Garfield County, Mont., which is one of the largest ever found.†The piece brought a new world auction record for the most expensive pre-historic tooth ever sold at public auction. The tooth sold for $56,250 during the December 11, 2011 Natural History auction at Bonhams in Los Angeles. (AP Photo/Cate Hurst, Bonhams)