Gus T-Rex becomes most expensive dinosaur ever sold
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Bids on "Gus" will start at $19 million, a steep price for public institutions. Specimens in private collections can be harder for researchers to examine, and they're practically impossible to include
A Tyrannosaurus rex fossil billed as one of the world's largest and most complete specimens was sold for a record $50.1 million Tuesday to a mystery bidder.