Nation More than half ‘original bone material’: See the T. rex skeleton that could fetch $8 million April 18, 2023Natalie Neysa Alund, USA TODAYComments Off on More than half ‘original bone material’: See the T. rex skeleton that could fetch $8 million The sale, part of a wider auction of artifacts by Koller, marks only the third time such a T. rex skeleton has gone up for auction.