One of the largest turtles that ever lived, Stupendemys geographicus, is not well understood because of scant, fragmentary finds. New fossils reveal the turtle was up to 7 ft long and fought other giant turtles and giant crocodiles. User perocarajo, in the Reddit Science subreddit, 14 Feb 2020
Biggest turtle that ever lived had 10 foot shell with horns User GoodNewsBot, in the Just Good News subreddit, 13 Feb 2020