Fig. 1 in Morphological homology, evolution, and proposed nomenclature for bear dentition

Fig. 1. Occlusal views of cheek teeth of studied bears. A. Ailuropoda sp. from Pleistocene of China. B. Ailurarctos lufengensis Qiu and Qi, 1989 (m1, IVPP V25032 and others IVPP V6892, reconstructed from CT scanning) from Lufeng, Yunnan Province, Latest Miocene. C. Ursus deningeri von Reichenau, 1904 (NMM1946/643, 1953/119, 1953/119, 1955/818, 1956/907, 1953/54, 1956/909; photo Jan Wagner) from Mosbach 2 locality, Germany, early Middle Pleistocene. D. Ursavus tedfordi Qiu, Deng, and Wang, 2014 (HMV1453) from Huaigou, Gansu Province, Late Miocene. For terminology and more details for dental character see Fig. 2. Not to scale. Abbreviations: RHyd3, medial ridge of protoconid; RMe3, medial ridge of metacone; RMed4, postero-medial ridge of metaconid; RPa1.2, medial branch of anterior ridge of paracone; RPad3, medial ridge of paraconid; RPrd2.2, medial branch of the posterior ridge of protoconid; RPrd3, postero-medial ridge of protoconid; RPrd4, postero-lateral ridge of protoconid.