Yangchuanosaurus

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Yangchuanosaurus Fossil range: Late Jurassic
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Sauropsida Superorder: Dinosauria Order: Saurischia Suborder: Theropoda Infraorder: Carnosauria Family: Sinraptoridae Genus: Yangchuanosaurus Dong et al., 1978
Species
Y. shangyouensis Dong et al., 1978 (type) Y. magnus Dong, Zhou & Zhang, 1983

Yangchuanosaurus was a theropod dinosaur that lived in China during the Late Jurassic period, and was similar in size and appearance to its North American contemporary, Allosaurus. It hails from the Upper Shaximiao Formation and was the largest predator in a landscape which included the sauropods Mamenchisaurus and Omeisaurus as well as the Stegosaurs Chialingosaurus, Tuojiangosaurus and Chungkingosaurus

Contents 1 Discovery and species 2 Description 3 Popular Culture 4 References

[edit] Discovery and species

In 1976, an almost complete skeleton of what was to be named Yangchuanosaurus shangyouensis was uncovered by a construction worker during the construction of the Shangyou Reservoir Dam in Yangshuan County in Sichuan Province. Since then further skeletons have been recovered.

Yangchuanosaurus species

• Y. shangyouensis Dong, Li, Zhou & Chang, 1979
• Y. magnus Dong, Zhou & Zhang, 1983

Gregory S. Paul (1988) regarded this genus as the same as Metriacanthosaurus, but this has not been supported.

[edit] Description

Yangchuanosaurus shangyouensis reached about 7 metres long (23 ft) and had a skull around 80 cm long (32 in). Its relative Y. magnus grew larger still; up to 10 metres long (33 ft), with a skull up to 1 metre (3 ft) in length. There was a bony knob on its nose and multiple hornlets and ridges, similar to Ceratosaurus. It had a massive tail that was about half its length.

[edit] Popular Culture

• The original skeleton of Yangchuanosaurus shangyouensis is on display at the Municipal Museum of Chongqing, as is some material of Y. magnus. Another, recovered from Xuanhan County in Sichuan, is on display in the Beijing Museum of Natural History.

[edit] References