A medical examination found the turtle to be in good health prior to the procedure, the People's Daily said, and the artificial insemination appeared to go smoothly.
But the turtle died the following day.
In pic - Researchers attempt artificial insemination on a female Yangtze giant softshell turtle at a zoo in Suzhou in eastern China's Jiangsu province. The only known female member of one of the world's rarest turtle species.
Most endangered turtle/news/international/world-news/death-of-rare-turtle-leaves-only-3-remaining-in-the-world/most-endangered-turtle/slideshow/68886529.cms
Yangtze giant softshell turtles originated in China, making their homes in the Yangtze River and Taihu Lake, according to the People's Daily.
The species is often referred to as the most endangered turtle in the world.