Paleontologist Adam Yates describes the find of fossilized bones of a new dinosaur species, Aardonyx Celestae, from the early Jurassic period (about 200 million years old) during an announcement of the discovery at the University of the Witwatersrand, in Johannesburg, Wednesday, Nov. 11, 2009. The fossils were found in the town of Senekal, near Bethlehem in the Northern Free State, in South Africa. (AP Photo/Denis Farrell)