M. youngi Pi, Ouyang & Ye, 1996: Mamenchisaurus youngi (pronunciation YOUNG-eye) was unearthed in Xinmin County, Zigong City in Sichuan Province, China, in 1989.
M. youngi Pi, Ouyang & Ye, 1996: Mamenchisaurus youngi (udtalt YOUNG-eye) blev udgravet i Xinmin County, Zigong City i Sichuan, Kina i 1989.