Yangchuanosaurus

Yangchuanosaurus Temporal range: 168.3–145 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Y. shangyouensis skeleton displayed in Hong Kong Science Museum
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia
Clade:	Theropoda
Family:	†Metriacanthosauridae
Genus:	†Yangchuanosaurus Dong et al., 1978
Type species
†Yangchuanosaurus shangyouensis Dong et al., 1978
Other species
†Y.? hepingensis (Gao, 1992) †Y.? zigongensis (Gao, 1993)
Synonyms
Synonyms of Y. shangyouensis Yangchuanosaurus magnus Dong, Zhou & Zhang, 1983 Szechuanosaurus "yandonensis" Dong et al., 1978 "Szechuanoraptor dongi" Chure, 2001 Metriacanthosaurus shangyouensis Paul, 1988 Synonyms of Y.? zigongensis Szechuanosaurus zigongensis Gao, 1993 Metriacanthosaurus carpenteri Paul, 1988

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 in size and appearance to its North American and European relative, Allosaurus. Yangchuanosaurus hails from the Upper Shaximiao Formation and was the largest predator in a landscape that included the sauropods Mamenchisaurus and Omeisaurus and the stegosaurs Chialingosaurus, Tuojiangosaurus and Chungkingosaurus. This theropod was named after the area in which was discovered, Yongchuan, in China.