Mosasaurus ("lizard of the Meuse River") is the type genus of the mosasaurs, an extinct group of aquatic squamate reptiles. It lived from about 82 to 66 million years ago during the Campanian and Maastrichtian stages of the Late Cretaceous.
During World War 1, a German U-boat sinks a British ship and takes the survivors on board.After it takes a wrong turn, the submarine takes them to the unkown land of Caprona, where they find dinosaurs and neanderthals.
