Megalosaurus bucklandii was a bipedal predatory dinosaur that lived approximately 166 million years ago in Europe during the mid-Jurassic period. It grew to about 9 meters long and weighed around a ton, with a flexible neck and three fingers on its front feet. Megalosaurus may have hunted stegosaurs and sauropods and was the first dinosaur to be studied and named based on a bone fragment found in England in 1676.