A Stegosaurus skeleton dubbed "Apex" was auctioned off by Sotheby's Wednesday for $44.6 million, making it the most expensive fossil ever sold.

A Stegosaurus skeleton dubbed "Apex" was auctioned off by Sotheby's Wednesday for $44.6 million, making it the most expensive fossil ever sold.

A 150-million-year-old, 20-foot-long Stegosaurus skeleton that is nearly complete sold at an auction for a record $44.6 million on Wednesday.

The Denver Museum of Nature and Science is filled with exhibits of dinosaur skeletons. And in the scientific equivalent of ...

A Stegosaurus skeleton has become the most valuable fossil ever sold at auction, being snapped up for $44.6 million in New York.

Sotheby’s auction Wednesday of the stegosaurus fossil known as “Apex" had been expected to fetch $4 million to $6 million — a hefty sum but no where near the final result.

The mounted skeleton of a stegosaurus dating back to the late Jurassic period sold at the Sotheby’s auction house for $44.6 million.

The dinosaur fossil of a Stegosaurus nicknamed Apex fetched 10 times its estimate at a Sotheby's auction on Wednesday.

The largest skeletal remains uncovered yet of a Stegosaurus was sold for $44.6m on Wednesday at Sotheby’s in New York, setting record as the most valuable dinosaur fossil ever auctioned.

Apex the Stegosaurus was sold for $44.6 million at auction Wednesday, breaking the record for most expensive dinosaur fossil.

The largest stegosaurus skeleton ever found is expected to fetch millions of dollars at auction in New York next week, likely fueling objections from paleontologists.