Figure 1. Area map showing the fossil localities and the stratigraphic distribution of turtles in the Mesozoic basins of Inner Mongolia and Liaoning, northeastern China.

(a,b) The type locality of Xiaochelys ningchengensis gen. et sp. nov. (Red asterisk; Yangshuwanzi, Ningcheng County, Chifeng City, Inner Mongolia) and Ningcheng Basin (Light green); Liaochelys jianchangensis and Perochelys lamadongensis (Blue asterisk; Lamadong, Jianchang County, western Liaoning) and Jianchang Basin (Dark green); Ordosemys liaoxiensis (Purple asterisk; Shanyuan, Beipiao City, western Liaoning) and Jinlingsi-Yanshan Basin (Blue green); Manchurochelys manchoukuoensis (Yellow asterisk; Jingangshan, Yixian County, western Liaoning; Qilinshan, Chifeng City, Inner Mongolia) and Yixian Basin (dark blue) and Chifeng Basin (light blue). Area map was modified from Zhou et al.¹³.