clipped from: news.yahoo.com ICLA, Bolivia (Reuters) – Bolivian farmer Primo Rivera had long wondered about the dents in a rocky hill near his home. Paleontologists solved the mystery this month: they are fossilized dinosaur footprints -- the oldest in Bolivia.
"The footprints we've found are important because they're the oldest ever found in Bolivia ... and the oldest footprints of Ankylosaurus ever found in the Southern Hemisphere," said Argentine paleontologist Sebastian Apesteguia in Buenos Aires.
The fossilized footsteps that intrigued Rivera for two decades are thought to be about 140 million years old, much older than other dinosaur prints found in the Andean country.
He said some of the prints were about 14 inches long, suggesting that the dinosaurs were "medium-sized ... about nine or 10 meters (about 30 feet) in length."