The turtle was the last confirmed female in the world when she died during fertility treatment, raising the grim prospect that the species, which is also known as the Red River giant and is native to China and Vietnam, may now be functionally extinct.
The female had been over 90 years old when she died on Saturday in the Suzhou zoo in southern China after a round of artificial insemination, the fifth since 2008.
She was moved to Suzhou from the Changsa Ecological Zoo 11 years ago to be paired with the male turtle there.
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