👉 A morosaurus is a type of dinosaur that lived during the Cretaceous period, around 68 to 66 million years ago. They were one of the largest land-dwelling dinosaurs and had an elongated body shape, long necks, and large teeth. The most famous specimen of a morosaurus is the "Great Dinosaur," which was discovered in 1903 and is now on display at the Natural History Museum in London.