Yangchuanosaurus

Yangchuanosaurus

Taxobox
name = "Yangchuanosaurus"
fossil_range = Late Jurassic



image_width = 250px
image_caption =
regnum = Animalia
phylum = Chordata
classis = Sauropsida
superordo = Dinosauria
ordo = Saurischia
subordo = Theropoda
infraordo = Carnosauria
familia = Sinraptoridae
genus = "Yangchuanosaurus"
genus_authority = Dong "et al.", 1978
subdivision_ranks = Species
subdivision =
*"Y. shangyouensis" Dong "et al.", 1978 (type)
*"Y. magnus" Taxobox_authority | author = Dong, Zhou & Zhang | date = 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"

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" Taxobox_authority | author = Dong, Li, Zhou & Chang | date = 1979
*"Y. magnus" Taxobox_authority | author = Dong, Zhou & Zhang | date = 1983

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

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.

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.

References


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*"Fantastic Facts About Dinosaurs" (ISBN 0-7525-3166-2)


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