sentences:  Later zoologists classified these turtles as belonging to the genera "Trionyx", "Pelodiscus", and "Pelochelys"; in 1987, Meylan categorized this species under the genus "Rafetus".The placement of the related or conspecific Hoan Kiem turtle, "Rafetus leloii", remains poorly known and controversial.Most herpetologists accept "R. leloii" is a junior synonym of the Yangtze giant softshell turtle, though some Vietnamese biologists, such as Ha Dinh Duc, who first described "R. leloii", and Le Tran Binh, assert "R. leloii" to be distinct.