Edward Drinker Cope (July 28, 1840 – April 12, 1897) was an American paleontologist and comparative anatomist, as well as a noted herpetologist and ichthyologist. He was a rival of paleontologist Othniel Marsh. In 1891, Marsh's employee John Bell Hatcher discovered Torosaurus, a species larger than Cope's most important find, Monoclonius.