What Was the World’s Biggest Dinosaur?

Which dinosaur was the biggest and heaviest? T-Rex, triceratops, the mighty brontosaurus? Actually, these famous dinos aren’t even in the same ballpark as the top heavyweight contenders, which may have weighed as much as 15 African elephants. Find out which dinosaurs are in the running for the top spot and why it’s so difficult to determine who truly was the biggest of the big.