In 1873, as part of the Bone Wars, paleontologist Othniel Charles Marsh complained in The American Naturalist that his rival, Edward Drinker Cope, was dentally inept; he “mistook canines for incisors, nasals for frontals, maxillaries for premaxillaries, maxillaries for nasals, and maxillaries for frontals!” Cope claimed he was “too fully occupied on more important subjects.”