First fossil record of Cedrelospermum (Ulmaceae) from the Qinghai–Tibetan Plateau: Implications for morphological evolution and biogeography
Lin-Bo Jia, Tao Su, Yong-Jiang Huang, Fei-Xiang Wu, Tao Deng, and Zhe-Kun Zhou
J Syst Evol . 2019, (2): 94 -104 .  DOI: 10.1111/jse.12435