What is "yizhousaurus"

"Yizhousaurus" is an informally named genus of basal sauropod dinosaurs which existed in what is now Lower Lufeng Formation, Yunnan Province of southern China during the lower Jurassic period. Identified from a nearly complete and exquisitely preserved skeleton, it is the most complete basal sauropod currently known with intact skull. It was first named by Sankar Chatterjee, T. Wang, S.G. Pan, Z. Dong, X.C. Wu, and Paul Upchurch in 2010 and the intended type species is Yizhousaurus sunae.