Problem: you have a few million lying around in the bank doing nothing and a huge front room that needs an ornament guaranteed to impress your guests. Solution: buy a T.rex. If you happen to be at The Venetian hotel in Las Vegas on 3 October, you could do just that. ‘Samson’ is a 66-million-year-old, 12m-long female T.rex made up of 170 bones (making it one of the most complete specimens to have been discovered), and it could be yours. But if Samson’s not to your taste, there are nearly 50 other lots in this fantastic fossil auction.