A research team led by Prof. Su Bing from Kunming Institute of Zoology of the Chinese Academy of Sciences, collaborating with the researchers from Lanzhou University and Northwest Agriculture and Forestry University, performed a DNA investigation on approximately 5,200-year-old bovid and rhinoceros specimens from the Shannashuzha (SNSZ) site, and revealed that the tropical Bos gaurus and Dicerorhinus sumatrensis once roamed over Tibetan Plateau. The finding was published in PNAS on October 19.
source https://phys.org/news/2020-10-bovid-rhinocerous-species-tibetan-plateau.html