canine was named Uintamastix atrox and was thought to have been a saber-toothed and carnivorous. Eighteen days after the description of Uintatherium, Cope and Marsh both named new genera of Uinta Dinoceratans, Cope naming Loxolophodon in his "garbled" telegram and Marsh dubbed Tinoceras. Due to Uintatherium being named first, Cope and Marsh's genera are synonymous with Uintatherium. Cope described two genera in his telegram, Loxolophodon and Eobasileus; the latter is currently considered separate from Uintatherium. Tinoceras was a new genus made for Titanotherium anceps by Marsh. Several days later, Marsh erected the genus Dinoceras. Dinoceras and Tinoceras would receive several additional species by Marsh throughout the 1870s and 1880s, many based on fragmentary material. Several complete skulls were found by Cope and Marsh crews, leading to theories like Cope's proboscidean assessment. Because of Cope and Marsh's rivalry, the two would often publish scathing criticisms of each other's work, stating their respective genera were valid. The trio would name 25 species now considered synonymous with Marsh's original species, Titanotherium anceps, which was placed in Leidy's genus, Uintatherium. Many additional discoveries of Uintatherium have since occurred, making Uintatherium one of the best-known and popular American fossil mammals. Princeton University launched expeditions to the Eocene beds of Wyoming in the 1870s and 1880s, discovering several partial since skulls and naming several species of Uintatheres that are now considered synonyms of U. anceps. Major reassesment came in the 1960s by Walter Wheeler who synonymized and re-described many of the Uintatherium fossils discovered during the 19th century A cast of a Uintatherium skeleton is on display at the Utah Field House of Natural History State Park. The skeleton of Uintatherium is also on display at the Smithsonian National Museum of Natural History in Washington, DC. A new species was named based on almost intact skull, U. insperatus, found in the lower part of the Lushi Formation of the Lushi Basin in Henan Province, China. References Further reading Academy of Natural Sciences National Park Service Wood, Horace Elmer 1923, The problem of the Uintatherium molars, Bulletin of the American Museum of Natural History ; v. 48, article 18 Fossil Evidence – Eocene: Smithsonian National Museum of Natural History Dinoceratans Eocene mammals of North America Fossil taxa described in 1872 Taxa named by Joseph Leidy Paleontology in Wyoming Paleontology in Utah Paleontology in Henan Prehistoric placental genera