Hairy rhinoceros fossils are mostly found in northern Eurasia, and occasionally found in Northeast Plain, North China Plain, Tibet and other places. The hairy rhinoceros has a unique structure-a nasal septum, simply the bone in the middle of the nose. The study found that the nasal septum of Tibetan hairy rhinoceros fossils is only an incomplete bone, and the nasal septum of Tibetan hairy rhinoceros fossils found earlier in northern Asia and Siberia is more complete than that of Tibetan hairy rhinoceros. This shows that the Tibetan hairy rhinoceros has a more primitive form.
The statement 'In winter, the Qinghai-Tibet Plateau is like a training base for ice age animals, where haired rhinoceros are trained for cold tolerance' can best support the above statement.