A new species of ancient giant rhino has been discovered and it would have weighed 21 tonnes, or roughly the equivalent of four large African elephants.
Scientists in north-western China made their conclusions about Paraceratherium linxiaense after examining a group of 26 million-year-old fossils found in 2015.
The hornless creature's head could have reached 7 metres tall, making it taller than a giraffe and allowing it to graze treetops throughout the woodland areas of the period.
"Its head can reach a height of 7 metres to browse leaves of treetops."
In the study published in Nature, the researchers say their analysis points to an entirely new species that was different to other known giant rhinos.
Other species of giant rhinos have been found throughout China, Mongolia, Kazakhstan and Pakistan.
Scientists suggest the newly discovered rhino giant travelled north through Asia via the Tibetan Plateau.
"Tropical conditions [at the time] allowed the giant rhino to return northward to Central Asia, implying that the Tibetan region was still not uplifted as a high-elevation plateau," said Professor Deng, from the Chinese Academy of Sciences in Beijing.
The weight of the animal is an approximation based on its fossils.
