FIGURE 1. Occlusal and lateral views of Frick collection microtines from Nan Zhuang Gou. Right dentary F:AM 116248, Mimomys (Cromeromys) gansunicus (1, 2). Left dentary F:AM 116247, Mimomys (Mimomys) orientalis (3, 4). Separate millimeter scales for the occlusal views and lateral views (drawings by Charles Repenning).