Mamenchisaurus

Mamenchisaurus Temporal range: Late Jurassic, 160–145 Ma PreЄ Є O S D C P T J K Pg N
Mounted skeleton of M. sinocanadorum, Japan
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Dinosauria
Order:	Saurischia
Suborder:	†Sauropodomorpha
Family:	†Mamenchisauridae
Genus:	†Mamenchisaurus Young, 1954
Type species
†Mamenchisaurus constructus Young, 1954
Species
†M. constructus Young, 1954 †M. hochuanensis Young & Zhao, 1972 †M. sinocanadorum Russell & Zheng, 1994 †M. youngi Pi, Ouyang & Ye, 1996 †M. anyuensis He et al., 1996 †M. jingyanensis Zhang, Li & Zeng, 1998 †M. yunnanensis Fang et al., 2004

Mamenchisaurus (/mɑːˈmʌntʃiˈsɔːrəs/ mah-MUN-chi-SAWR-əs,[1] or spelling pronunciation /məˌmɛntʃiˈsɔːrəs/) is a sauropod dinosaur genus including several species, known for their remarkably long necks which made up half the total body length. It is known from numerous species which ranged in time from 160 to 145 million years ago, from the Oxfordian to Tithonian ages of the late Jurassic Period of China, and the largest species may have reached 35 m (115 ft) in length and possibly weighed 50 to 75 tons.