Upper cheek teeth and section of DP1 of Plesiaceratherium gracile from the Early Miocene of China
(A) Occlusal view of upper cheek tooth row of adult individual STM 44–67; (B) occlusal view of the isolated upper cheek teeth DP1–P2 (GSP 127); (C) DP1, labial view, showing crown and root, both have been detached for preparing of section; (D) antero-posterior section of root, overview; (E and F) cement at the interradicular area, red arrowheads indicate the annual incremental lines under polarized light.