Now thats a huge turtle. I didn't think turtles ever got that big, but I guess I was wrong. It had to contend with giant crocodiles, but an interesting feature of the giant turtle is the males had forward pointing horns on either side of their shells, perhaps to fight off enemies. These creatures existed millions of years ago, way after the dinosaurs though.
https://www.bbc.com/news/amp/world-latin-america-51485011