Fossil discovery aids sinkhole researchers

A fossil of a fusulinid — the impression of an extinct, single-celled creature that lived 250 to 320 million years ago — has been found for the first time in the sinkhole group in Hanzhong, Shaanxi province, China Central Television reported on Wednesday.

The 8-millimeter fossil, known in Chinese as tinghuashi, was discovered by experts of the Shaanxi Institute of Geological Survey in a recent scientific expedition.