Bone Wars
meaning "thunder lizard", from the Greek / meaning "thunder" and / meaning "lizard", and from the Latin "excelsus", "noble" or "high". By this time, the Morrison Formation had become the center of the Bone Wars, a fossil-collecting rivalry between Marsh and another early paleontologist, Edward Drinker Cope. Because of this, the publications and descriptions of taxa by Marsh and Cope were rushed at the time.