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Ouranosaurus

Ouranosaurus (meaning “Brave Lizard”) is a genus of iguanodontid dinosaur from the Early Cretaceous of northern Africa, especially in the Echkar Formation in Niger. Two very complete specimens were unearthed in the Echkar Formation. The first complete fossil found in 1965 and the second in 1972. The type species, O. nigerensis, was described by Phillippe […]

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Altirhinus

Altirhinus (meaning “High Nose”) is a genus of iguanodontid from the Early Cretaceous of Mongolia. The type species, A. kurzanovi, was described by David B. Norman in 1998. The specific name is called kurzanovi for Sergei Kurzanov, the Russian scientist that originally found the specimen in 1981. In the original description, Norman stated that Altirhinus […]

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Olorotitan

Olorotitan (meaning “Swan Giant”) is a genus of lambeosaurine hadrosaur from the Late Cretaceous of eastern Russia. The type species was described in 2003 by Pascal Godefroit,‭ ‬Yuri Bolotsky‭ & ‬Vladimir Alifanov‭. Godefroit, et al named the type species O. arharensi, for the Arhara County in Russia. The holotype specimen was almost 90% complete. In fact, […]

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Jaxartosaurus

Jaxartosaurus (meaning “Jaxartes River Lizard”) is a genus of lambeosaurine hadrosaurid dinosaur from the Late Cretaceous of Kazakhstan and China. The generic name is derived from the Jaxartes River in Kazakhstan. It had a large, rounded crest on it’s head, similar to Hypacrosaurus or Corythosaurus. Anatoly Nikolaaenvich Riabinin described the type species, J. aralensis, in 1937. […]

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Metriacanthosaurus

Metriacanthosaurus (meaning “Moderately-Spined Lizard”) is a genus of metriacanthosaurid from the Middle Jurassic of the Oxford clays of England. In 1923, Friedrich von Huene named this dinosaur Megalosaurus parkeri, in honor of W. Parker, who collected the fossils.  In 1932, von Huene renamed the specimens Altispinax parkeri. In 1964, Alick Walker decided that the fossils […]

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Xenoceratops

Xenoceratops (meaning “Alien Horned-Face”*) is a genus of centrosaurine ceratopsian of the tribe pachyrhinosaurini from the Late Cretaceous of Canada. Michael J. Ryan, David C. Evans, and Kieran M. Shepherd described the type species X. foremostensis in 2012. The species name, foremostensis means “from Foremost Formation”, the formation in Alberta, Canada where Xenoceratops was discovered. […]

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Pachyrhinosaurus

Pachyrhinosaurus (meaning “Thick-Nosed Lizard”) is a genus of centrosaurine dinosaur to the tribe pachyrhinosaurini and clade pachyrostra from the Late Cretaceous of Canada and the US. The type species was described in 1950 as Pachyrhinosaurus canadensis, described by Charles Sternberg. In 2008, a second species, P. lakustai, was described by Currie, Langston, and Tanke. The […]

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Sinoceratops

Sinoceratops (meaning “Chinese Horned-Face”) is a genus of ceratopsian to the tribe of pachyrhinosaurini from the Late Cretaceous of China. It was described by Xu Xing, et al in 2010. It is the only chasmosaurine not from North America. It is also one of the largest, at 23 feet (7 metres) long. The city of […]

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Lanzhousaurus

Lanzhousaurus (meaning “Lanzhou Lizard”) is a genus of iguanodont dinosaur from the Early Cretaceous of the Gansu region in China. Only a partial skeleton has been discovered, and of the fossils recovered were teeth. The teeth were very large, and have been considered the largest teeth of any herbivorous creature. This helped to classify this […]

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Siamotyrannus

Siamotyrannus (meaning “Siamese Tyrant”) is a genus of metriacanthosauridae from the Early Cretaceous of Thailand. Siamese is the denonym for objects or people-or metriacanthosaurs- from Siam, the old kingdom in present-day Thailand. It was found in 1993 at the Phu Wiang 9 site by Somchai Traimwichanon.  Three years later, in 1996,  Eric Buffetaut and colleagues […]

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