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Archive | Dinosaurs from the Americas


Oryctodromeus (meaning “Digging Runner”) is a genus of small ornithopod dinosaur from the Late Cretaceous of Montana and Idaho, in the United States. The type species is O. cubicularis, named in 2007 by David Varricchio, Anthony Martin, and Yoshihiro Katsura. It was the first fossil evidence of a burrowing dinosaur discovered, with the type specimen […]

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Velafrons (meaning “Sailed Forehead”) is a genus of Hadrosaurid from the Late Cretaceous of Mexico. The type species is V. coahuliensis, described by Terry Gates, Scott D. Sampson, and others in 2007. It is known from a near complete adult skull and scattered remains of a single juvenile. The juvenile is already about 25 feet […]

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Machairoceratops(meaning “Bent Sword Horned Face”) is a genus of Ceratopsid from the Late Cretaceous of Utah, in the United States. The meaning of the name refers to how the frill horns bend forward on the Machairoceratops. The brow horns are similar to that of Diabloceratops. The type and only species, M. cronusi, was described in […]

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Brontosaurus(meaning “Thunder Lizard”) is a genus of ┬áDiplodocidae dinosaur that lived in what is now the western area of the United States during the Late Jurassic period. The type species, B. excelsus, was described by Othniel Charles Marsh in 1879. In 1902, Peterson and Gilmore named a new genus of dinosaur Elosaurus, with the species […]

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Dakotaraptor (meaning “Dakota Thief”) is a genus of dromaeosaur from the Late Cretaceous of South Dakota in the United States. The specific name is D. steini, named by Robert DePalma in 2015. It was originally found in 2005. At first, this dinosaur seems as if it was a normal dromaeosaurid, but it is three times […]

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Nanuqsaurus (meaning “Polar Bear Lizard”) is a genus of tyrannosaurid from the Late Cretaceous of Alaska. The fossils were found in the Prince Creek Formation and described in 2014 by Anthony R. Fiorillo and Ronald S. Tykoski, making this a very recent discovery. The original fossils (a partial skull) were referred to Gorgosaurus and then […]

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Prosaurolophus (meaning “Prior Crested Lizard”) is a genus of saurolophinae dinosaur from the Late Cretaceous of the US and Canada. The type species, P. maximus, was described in 1916 by Barnum Brown, the discoverer of Tyrannosaurus rex. A second species, P. blackfeetensis, was described in 1992 by Jack Horner. Jack Horner differentiated P. blackfeetensis from […]

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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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