Name the world's rarest giant softshell turtle that passed away in Suzhou Zoo,China.

The last known female member of Yangtze giant softshell turtle, 90 years old, died in Suzhou Zoo, China. Now, there are only three left in the world. The Wildlife Conservations Society (WCS) declares the Yangtze giant softshell turtle the world's most critically endangered turtle species. One male Yangtze giant softshell turtle lives in Suzhou Zoo and the other two in Vietnam.