The Thunder King (the scientific name Colossocollurex Styrax means "Colossal-Necked King with Spikes"). The Thunder King is a Titanosaur, possibly related to Dreadnoughtus or something. This is less realistic than some of my previous dinosaurs for this movie, but it's also more creative, being a Titanosaur with a tail club.
At 28 meters (about 92 feet) in length and over 70 tons, this is the largest animal in the movie. They are so big that most predators don't even risk hunting them unless they absolutely need to. Seriously look at its size compared to a Blue Whale!
They're about the same length, but a Thunder King is lighter (closer in size to a large Alamosaurus or a small Argentinosaurus than a Blue Whale) because an animal as big as a blue whale cannot function on land.
