New dinosaur discovered in South Africa: scientists

Dubbed Aardonyx Celestae, a combination of Afrikaans and Greek that means "Earth Claw", fossils of the seven-metre (23-feet) long dinosaur were uncovered in the central Free State province by a team of post-graduate students from Johannesburg's Witswatersrand University.

"We knew that there were likely to be some fossils in these bone beds... but we did not expect to find anything of this magnitude," said Adam Yates, the scientist who supervised the work.

The Aardonyx appears to be ancestors of the massive sauropod dinosaurs, the largest backboned animals ever to walk on land, he said.

The fossils from a partial skeleton unveiled Wednesday came from a young dinosaur, Yates said.

"Growth rings in the rib and shoulder blade sections show that Aardonyx was not full grown -- it was probably less than 10 years when it died near a river or stream," he said.

Yates said the Aardonyx was a vegetarian, with a wide gaping mouth and a powerful back. Its claws measured about five centimetres (two inches) long, and it likely walked on two legs, but was strong enough to drop on all fours as well.

The fossils will be put on display at the Transvaal Museum in the South African capital Pretoria.

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