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Yangchuanosaurus is an extinct genus of metriacanthosaurid theropod dinosaur that lived in China from the Middle Jurassic to Late Jurassic periods (Bathonian to Tithonian stages), and was similar (although slightly larger) in size and appearance to its North American and European relative, Allosaurus. Yangchuanosaurus hails from the Upper ...
The dentition of Sinraptor was very similar to that of Allosaurus and indicated that it likely would have preyed upon medium-sized dinosaurs such as stegosaurs by using its blade-like teeth to inflict massive, fatal wounds. [6] Sinraptor hepingensis, formerly referred to Yangchuanosaurus, is a second species referred to this genus. [1]
If the allosaurs' stress-fractures were caused by damage accumulating while walking or running this bone should have experience more stress-fractures than the others. The lack of such a bias in the examined Allosaurus fossils indicates an origin for the stress-fractures from a source other than running. The authors conclude that these fractures ...
Metriacanthosauridae fossils have only been found in modern Europe and Asia, parts of the prehistoric landmass Laurasia. From those found in Asia, most are from China, with a few discoveries in Thailand and other Asian countries. [clarification needed] The group is thought to have originated in Asia and spread westward to Europe.
Those would have been useful as protection against meat-eating dinosaurs like Allosaurus. This Stegosaurus fossil was found in Colorado and fetched a record $44.6 million at a Sotheby's auction in ...
"I'm excited for my friends to see the film," one of the kids said. "They don't believe me that I found a T. rex." ‘Extremely rare’ dinosaur discovered by 3 tweens: My friends ‘don’t ...
Size of three Yutyrannus specimens compared to a human. Yutyrannus was a large bipedal predator. The holotype and oldest-known specimen has an estimated length of 9 metres (29.5 ft) and an estimated weight of about 1,414 kilograms (3,117 lb). [1]
A rare fossil of an adolescent Tyrannosaurus rex has been excavated in North Dakota's badlands - a find noteworthy for the scientific insight it may offer into the life history of this famous ...