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OLOROTITAN

a plant-eating lambeosaurine hadrosaurid dinosaur from the Late Cretaceous of Russia.
olorotitan
Pronunciation: o-LO-ro-TIE-tuhn
Meaning: Giant swan
Author/s: Godefroit et al. (2003)
Synonyms: None known
First Discovery: Amur, Russia
Chart Position: 427

Olorotitan arharensis

Olorotitan is one of a tribe of helmet-crested lambeosaurine hadrosaurids known as lambeosaurinins (previously known as corythosaurins and/or hypacrosaurins), and represents the most complete dinosaur known from Russia and one of the best preserved lambeosaurines found outside of western North America to date.

olorotitan skullCut from the same cloth as North America's Corythosaurus and Hypacrosaurus, Olorotitan is notable for a hollow headcrest that flares out at the end, and is named for its long neck (Olorotitan means "giant swan") containing 18 vertebrae—three more than the going rate for your average hadrosaur, and ditto for its sacrum. The length and proportions of its arms suggest Olorotitan walked primarily on two legs though, like most hadrosaurs, it could probably move, or at least graze, on all fours.

Smaller, bipedal, swift running dinosaurs tend to have longer shins than thighs while in larger, slower ones the trend is reversed. The shins of Olorotitan are the same length as its thighs so while it wasn't breaking any land speed records it could probably outrun most large hadrosaurs and iguanodonts, which is always handy when a hungry apex predator is in hot pursuit.
(Giant Swan from Arhara) Etymology
Olorotitan is derived from the Latin "olor" (swan) and the Greek "Titan" (giant) because of its great size and long "swan-like" neck.
The species epithet (or specific name), arharensis, is derived from "Arhara " (for Arhara County where the holotype was found) and the Latin "ensis" (from).
Discovery
The remains of Olorotitan were discovered at the "Kundur locality" in the Udurchukan Formation (Tsagayan Group), Yevreyskaya, Kundur, Amur Region, , Far Eastern Russia, in 1999, and were fully excavated by 2001. The holotype (AEHM 2/845, housed at the Amur Natural History Museum at Blagoveschensk) is a partial skeleton and skull. The Kunder site was discovered in 1990 by Vladimir A. Nagornyi (Far Eastern Institute of Mineral Resources, FEB RAS, Blagoveschensk, Russia), who collected fossil bones in a road section along the Chita-Khabarovsk highway near the village of Kundur. He was honored in the epithet of Kundurosaurus which was named in 2012.
Estimations
Timeline:
Era: Mesozoic
Epoch: Late Cretaceous
Stage: Maastrichtian
Age range: 67-66 mya
Stats:
Est. max. length: 12 meters
Est. max. hip height: 4 meters
Est. max. weight: 5 tons
Diet: Herbivore
olorotitan size
References
• Horner J.R., Weishampel D.B. and Forster C.A. (2004) "Hadrosauridae" in Weishampel, Osmólska and Dodson (eds.) "The Dinosauria: Second Edition".
• Godefroit P., Bolotsky Y. and Alifanov V (2003) "A remarkable hollow-crested hadrosaur from Russia: an Asian origin for lambeosaurines".
• Godefroit P., Bolotsky Y.L. and Bolotsky I.Y. (2011) "Osteology and relationships of Olorotitan arharensis, a hollowcrested hadrosaurid dinosaur from the latest Cretaceous of Far Eastern Russia".
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To cite this page:
Atkinson, L. "OLOROTITAN :: from DinoChecker's dinosaur archive".
›. Web access: 19th Jan 2018.
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