Bolivian amateur palaeontologist, Omar Medina, puts his hand in a dinosaur footprint in an area called Tunasniyoj, which means "the place of the prickly pear cactus," where a new discovery of dinosaur footprints was made by Bolivian farmer Primo Rivera near Icla, 155 km (96 miles) southeast of Sucre, November 16, 2008. This new discovery, which complements two other world famous dinosaur footprint sites in the same province, is twice as old as the others, dated by Argentine palaeontologists at 144 million years old, and contains some 300 footprints from two types of dinosaurs, carnivorous theropod and ankylosaurus. [Agencies]