FIG. 9 in Biostratigraphy and Diversity of Paleogene Perissodactyls from the Erlian Basin of Inner Mongolia, China

FIG. 9. Paleogene outcrops at Erden Obo: A, the outcrops of the "Lower Red," "Lower White," and "Middle Red." The lower-right part of the photo is mainly the "Lower White," which overlies the "Lower Red" and is overlain by the "Middle Red" as shown by the hill, far left; B, the outcrops of the "Middle Red," "Middle White," "Upper Red," and "Upper White." The lower-right part of the photo is mainly the basal part of the "Upper Red," which overlies the "Middle White" and is overlain by the "Upper White (or yellow)." The top of the "Upper White" forms the Gobi surface.