Tibet: Cradle of evolution for pre-Ice Age beasts

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WASHINGTON: Paleontologists have discovered a species of woolly rhinoceros that may be an ancestor of the great ice age beasts that roamed the plains of North America, Europe and Asia. The discovery of a Coelodonta thibetana fossil dated about 3.7 million years ago, about a million years before other known woolly rhino has led the Paleontologists to think that the Tibetan Plateau may be a cradle of evolution for the Ice Age beasts. The woolly rhino fossil dug up on the Tibetan Plateau is believed to be the oldest specimen of its kind yet found.

This report appeared in Science Journal.

The ancient rhino, whose remains were found in Zanda Basin in southwest Tibet, is believed to have been well-adapted for a frosty life in the Himalayas about one million years before the Ice Age.

“We think that the Tibetan Plateau may be a cradle for the origins of some of the Ice Age giants,” study author Xiaoming Wang, from the Natural History Museum of Los Angeles said.

Coelodonta thibetana, was equipped with a built-in snow shovel on its face that would have allowed it to brush away snow and find vegetation beneath. It suggests that the woolly rhinoceros was well-adapted for a cold, icy life in the Himalayas that may have left it perfectly poised to spread across Asia when global temperatures plummeted, ushering in the Ice Age, the researchers said. According to Wang, such large and furry mammals ruled the world during Earth’s cold snap from 2.6 million to about 12,000 years ago. “It just happens to have the right environment to basically let animals acclimate themselves and be ready for the Ice Age cold.”

The researchers, who detailed their study in the journal Science, believe the rhino may have belonged to an animal that weighed 1.2 to 1.4 tonnes, close to the size of modern rhinos and about 10% smaller than woolly rhinos found a million years later during Ice Age.

(With PTI Inputs)



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