Afghanistan, July 16 -- An anonymous bidder purchased the 67-million-year-old T. rex fossil "Gus" for a record $50.1 million at Sotheby's New York auction Tuesday.

A rare and remarkably complete Tyrannosaurus rex fossil has sold for a record $50.1 million at a Sotheby's auction in New York, becoming the most expensive dinosaur fossil ever auctioned and reigniting debate over whether scientifically important specimens should remain in private collections or be displayed in public museums.

A 67-million-year-old Tyrannosaurus rex fossil known as "Gus" sold for $50.1 million at Sotheby's in New York, setting a new world record for the most expensive dinosaur fossil ever sold at auction, the auction house announced on Wednesday.

The fossil su...