October 6, 2011
This July 12, 2011, photo provided by the University of Arkansas shows Geosciences professor Steve Boss, right, and colleagues Brian Platt discussing measurements of dinosaur tracks from a three-toed dinosaur being studied studied in Southwest Arkansas. The tracks, likely are from Acrocanthosaurus atokensis, one of the largest predators ever known, were found on private land in southwest Arkansas and provide a window into the life forms that roamed the area as long as 120 million years ago during the Early Cretaceous period.
Stories this photo appears in:
Researchers at the University of Arkansas are studying a new field of fossilized dinosaur tracks, including one set that appears to be from a large three-toed predator, the university said Wednesday.