ARK: Survival Evolved - TITANOSAUR size comparison. Biggest Dinosaur Ever w/ Mau5Craft. Titanosaur the biggest dinosaur that ever lived the earth and the largest dinosaur in the world. It's also known that the Titanosaur is the biggest dinosaur that walked the earth. Back with more ark survival evolved gameplay with the ark titanosaur. Check this out. Oh, and there's dinosaurs. |--| ★ SUBSCRIBE -.