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Tyrannosauroidea Reference Libraries

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Daspletosaurus
2013-04-28 18:27:18

Daspletosaurus, meaning “frightful lizard” is a genus of tyrannosaurid theropod dinosaur that resided in western North America between 77 and 74 million years ago, during the Late Cretaceous Period. Fossils of the only named species were found in Alberta, although other possible species from Alberta and Montana wait for description. Daspletosaurus is closely related to the much larger...

Tarbosaurus
2013-02-18 12:21:10

Tarbosaurus, meaning “alarming lizard” is a genus of tyrannosaurid theropod dinosaur that thrived in Asia about 70 million years ago, at the end of the Late Cretaceous Period. Fossils have been uncovered in Mongolia, with more incomplete remains found further afield in parts of China. Many species have been named, although, modern paleontologists recognize only one, T. bataar, as...

Tyrannosaurus
2012-03-21 21:47:44

Tyrannosaurus, meaning “tyrant lizard,” was a genus of theropod dinosaur from the Late Cretaceous Period (68 to 65 million years ago). It was among the last non-avian dinosaurs to exist prior to the Cretaceous-Tertiary extinction event. Perhaps the most famous Tyrannosaurus species, T. rex, was named in 1905 by Henry Fairfield Osborn, president of the American Museum of Natural History...

Xiongguanlong
2010-09-08 17:59:47

Xiongguanlong, named after the city of Jiayuguan in northwestern China, is a genus of tyrannosauroid dinosaur from the Aptian to Albian ages of the Early Cretaceous Period (100 to 125 million years ago). The type species, X. baimoensis, was described in 2009 by a group of researchers from China and the USA. The species name, baimoensis, means "white ghost", after "white ghost castle", a...

Labocania
2010-02-03 16:33:45

Labocania, meaning "red lips"(named for the La Bocana Roja Formation), is a genus of theropod dinosaur from the Campanian age of the Late Cretaceous Period (70 million years ago). It lived in what is now Baja California, Mexico. The type species, L. anomala, was described in 1974 by Ralph Molnar. Labocania is known only from fragmentary remains, and its physical characteristics are not well...

Alioramus
2010-02-03 16:23:27

Alioramus, meaning "˜different branch', is a genus of theropod dinosaur from the Late Cretaceous Period (70 to 65 million years ago) from what is now Asia. It is known from a partial skull and three metatarsals (foot bones). It was discovered in the Gobi Desert in the early 1970s by a Soviet-Mongolian expedition. The fossil was found at Nogon-Tsav in the Mongolian province of Bavankhongor in...

Gorgosaurus
2010-02-02 13:44:40

Gorgosaurus, meaning "fierce lizard", is a genus of tyrannosaurid theropod dinosaur from the Late Cretaceous Period (77 to 74 million years ago) that lived in what is now western North America. It has been discovered in Alberta, Canada and possibly Montana, USA. Only one type species is known, G. libratus. Gorgosaurus was first described by Lawrence Lambe in 1914. Several specimens have been...

Appalachiosaurus
2009-08-04 17:22:37

Appalachiosaurus or "Appalachian lizard" is a genus of tyrannosauroid dinosaur from the Late Cretaceous Period of eastern North America. This was a bipedal predator. Only one juvenile skeleton has been found, representing an individual about 23 feet long and weighing over 1300 pounds. This indicates that an adult would have been much larger. This specimen is the most completely known theropod...

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