Udanoceratops tschizhovi Udanoceratops

Udanoceratops (meaning “Udan-Sayr horned face”) is a genus of large leptoceratopsid dinosaur that lived during the Late Cretaceous period of Mongolia. The holotype specimen, the partial skeleton of an adult with its bones encapsulated in calcium carbonate, was discovered in the 1980s as part of the Joint Soviet-Mongolian Paleontological Expedition, and was subsequently transported to the Paleontological Institute of the Russian Academy of Sciences. In 1992, it was described by palaeontologist Sergei Kurzanov. The sole species of Udanoceratops, also the type species, is Udanoceratops tschizhovi, named after a colleague of Kurzanov, D. O. Tschizhov. Additional remains have been assigned to Udanoceratops, though these may be misattributions.

Udanoceratops is the largest known leptoceratopsid, with some estimates placing it at about 4 m in length and 700 kg in weight.