The species was discovered by a Vietnamese scientist who came across tanks full of them at small restaurants in villages in Ba Ria－Vung Tau Province.

　　The scientist, Ngo Van Tri of the Vietnam Academy of Science and Technology, became intrigued when he noticed that all of the lizards appeared to be female.

　　He contacted an American colleague about what he had seen who came out to assess the findings.

　　Dr Lee Grismer, a professor at La Sierra University in Riverside, California, and his son, Jesse Grismer, a doctoral candidate, flew to Hanoi and travelled to a little restaurant two－day's trip away where the owner had promised to set aside some of the lizards to be studied.

　　However, by the time Dr Grismer and his son arrived, they found that the owner had cooked all the lizards to serve up to customers and there were none left.

　　Determined not to abandon their study the men hired some children to track down and catch as many lizards as they could find.

　　With around 60 lizards caught and identified, the scientists discovered that they had a previously undocumented species.

　　“It's an entirely new lineage (血统) of life that was being eaten and sold in restaurants for food, ”says Grismer. “But it's something that scientists have missed for hundreds of years.”

　　After DNA sampling carried out on the tiny lizards the men made another surprising discovery: all of the lizards were female, and were clones of their mothers.

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