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Hadrosaurid Reference Libraries

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Edmontosaurus
2013-04-28 14:11:51

Edmontosaurus is a genus of a crestless hadrosaurid, meaning duck-billed, dinosaur. It includes two species: Edmontosaurus regalis and Edmontosaurus annectens. Fossils of E. regalis have been recovered in rocks of western North America that date from the late Campanian stage of the Cretaceous Period 73 million years ago, while those of E. annectens were recovered in the same geographic region...

Saurolophus
2012-03-22 19:06:13

Saurolophus, meaning “lizard crest,” is a genus of hadrosaurid dinosaur from the Late Cretaceous Period (70 million years ago) of what is now North America and Asia. It is one of the few genera of dinosaurs that is known from multiple continents. The first specimen was described by paleontologist Barnum Brown in 1911. The skeleton is now on display at the American Museum of Natural History...

Parasaurolophus
2012-03-20 22:10:02

Parasaurolophus, meaning “near-crested lizard,” is a genus of ornithopod dinosaur from the Late Cretaceous Period of what is now North America (76 to 73 million years ago). This genus is based on a skull and partial skeleton missing most of the tail and hind legs below the knees, which was found by a field party from the University of Toronto in 1920 near Sand Creek along the Red Deer River...

 Gryposaurus
2011-04-12 14:48:54

Gryposaurus, meaning "hooked-nosed lizard," is a genus of duckbilled dinosaur from the late Santonian to late Campanian stages of the Late Cretaceous Period (83 to 75.5 million years ago). It lived in what is now North America. It is known from the Dinosaur Park Formation in Alberta, Canada; the Lower Two Medicine Formation in Montana; and the Kaiparowits Formation in Utah, USA....

Tethyshadros
2010-10-08 17:31:23

Tethyshadros, meaning "Tethys ocean thick lizard," is a genus of hadrosaurid dinosaur from the Campanian-Maastrichtian ages of the Late Cretaceous Period (71 - 70 million years ago) from Italy. It was named and described by Italian paleontologist Fabio Marco Dalla Vecchia in 2009. The type species is T, insularis. The specific name means "insular" or "of the island." Tethyshadros is known...

Tsintaosaurus
2010-10-06 21:19:27

Tsintaosaurus, meaning "Qingdao lizard," is a genus of hadrosaurid dinosaur from the Late Cretaceous Period (83 to 71 million years ago). It lived in Southeast Asia, in what today is Shanong, located in southern China. The type species, T. spinorhinus, was described by C.C. Young in 1958. This hadrosaur is typically reconstructed with a unicorn-like crest on its skull. But studies conducted...

Kritosaurus
2010-02-03 16:31:17

Kritosaurus, meaning "separated lizard" (sometimes misinterpreted as "noble lizard"), is a genus of duckbilled dinosaur from the Late Cretaceous Period (73 million years ago). It lived, possibly, in both North and South America. It was discovered in 1904 by Barnum Brown near Ojo Alamo, New Mexico. The initial discovery could not be verified age-wise, but by 1916 Brown was able to determine it...

Claosaurus
2009-08-18 22:44:11

Claosaurus, meaning "˜broken lizard', is a genus of hadrosaurid dinosaur from the Late Cretaceous Period (Santonian age). It got its name due to the odd display of its fossils in the bone bed, which appeared to be broken. It was first discovered near the Smokey Hill River in Kansas, USA in 1872. It was originally named Hadrosaurus agilis in 1872, but was changed to Claosaurus agilis in 1890...

Brachylophosaurus
2009-08-11 18:10:03

Brachylophosaurus or "short-crested lizard" is a genus of dinosaur that was found in the Oldman Formation of Alberta, Canada in 1936. It was first described by Charles M. Sternberg in 1953. It remained the only described specimen until 1988, when Jack Horner described the specimen B. goodwini that was discovered in the Judith River Formation in Montana. A find by Nate Murphy in 1994 was a...

Anatotitan
2009-07-30 21:06:39

Anatotitan or "large duck" is a genus of flat-headed dinosaur commonly referred to as a "duck-billed dinosaur". It lived during the end of the Cretaceous Period, in what is now North America. Its remains have been preserved in the Hell Creek and Lance Formations dated 68 to 65 mya. They were among the last dinosaurs that existed on the planet before the extinction of all dinosaurs 65 million...

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