Chicago Tribune | Breaking new dino ground

Bad weather in December hounded Hammer's team as it worked at 12,500 feet on the side of Mt. Kirkpatrick, 400 miles from the South Pole.

The expedition marked the return to the site where, in January 1991, a Hammer-led expedition found mainland Antarctica's first dinosaur, a 25-foot-long meat-eating theropod, Cryolophosaurus.