page_title: Olorotitan
section_title: Discovery and naming
hierarchical_section_title: Olorotitan / Discovery and naming
caption_attribution_description: English: Skeleton in situ of holotype of Olorotitan arharensis Godefroit, Bolotsky &amp; Alifanov, 2003 (AEHM 2/845). Upper Cretaceous of Kundur (Russia).
context_page_description: Olorotitan was a genus of lambeosaurine duckbilled dinosaur from the middle or latest Maastrichtian-age Late Cretaceous, whose remains were found in the Udurchukan Formation beds of Kundur, Amur Region, Far Eastern Russia. The type, and only species is Olorotitan arharensis. It was one of the last non-avian dinosaurs and it went extinct during the Cretaceous–Paleogene extinction event.
context_section_description: The holotype specimen of Olorotitan, consisting of a nearly complete skeleton, was discovered in field work in the Udurchukan Formation of Kundur in the Amur region of Russia between 1999 and 2001. Pascal Godefroit and colleagues described and named it as a new species in 2003. It was the first nearly complete dinosaur specimen to be described from Russia, and is the most complete lambeosaurine skeleton discovered anywhere outside of western North America.
  Large numbers of fragmentary dinosaur, turtle, and crocodilian specimens were found in the several hundred square metre area around the discovery site. Similarly aged localities in Blagoveschensk, also from the Udurchukan Formation and Jiayin, on the Chinese side of the Amur River, have yielded similarly high numbers of lambeosaurine fossils.
  The generic name Olorotitan means "titanic swan", while the specific descriptor arharensis refers to the location of the fossil find at Arhara County.
caption: Fossils of the holotype specimen in situ
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