正模标本SXMG V 00 004由山西区域地质调查队在山西省助马铺组(英语:Zhumapu Formation)的一中发现的,该地层可追溯至森诺曼阶,距今约九千五百万年。它由骨盆右半部的两块骨头、部分右髂骨(编号ZY004-001)和右坐骨轴的下端(编号ZY004-002)组成,未指定其他样本。[2]
^Wang, Run-Fu; You, Hai-Lu; Wang, Suo-Zhu; Xu, Shi-Chao; Yi, Jian; Xie, Li-Juan; Jia, Lei; Xing, Hai. A second hadrosauroid dinosaur from the early Late Cretaceous of Zuoyun, Shanxi Province, China. Historical Biology. 2017, 29 (1): 17–24. ISSN 0891-2963. doi:10.1080/08912963.2015.1118688(英语).
^ 2.02.12.22.3Run-Fu Wang, Hai-Lu You, Suo-Zhu Wang, Shi-Chao Xu, Jian Yi, Li-Juan Xie, Lei Jia and Hai Xing. A second hadrosauroid dinosaur from the early Late Cretaceous of Zuoyun, Shanxi Province, China. Historical Biology: An International Journal of Paleobiology. 2016,. in press: 17–24. doi:10.1080/08912963.2015.1118688.