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Russian scientists recently grew plants from fruits stored by squirrels, in Siberian permafrost conditions, more than 30,000 years ago!

The team, led Svetlana Yashina and David Gilichinsky, from the Institute of Cell Biophysics of the Russian Academy of Sciences, have raised the Silene stenophylla plant from seeds buried at a depth of 38 metres, on the banks of Kolyma River in Siberia.

This is scarcely the first time that scientists have been involved in the discovery of animals and plants once believed to be extinct.

In 2010, a team from the Denver Museum of Nature and Science was involved in excavating the Snowmass village in Colarado, U.S. They found an entire Ice Age ecosystem near the village. They found parts of the American mastodon, bison, ground sloth, Columbian mammoth, deer, horse and camel.

From mammoth to mummies and other mammals, scientists have often discovered that some amazing animals believed to be extinct were, in fact, not...

Check out some of the more amazing discoveries...