Newly identified species, Near horn beast lincia ence Named after the discovery spot in the Linxia Hui Autonomous Region of Gansu Province — it stood above other animals during its lifetime. The 26-foot (8-meter) long beast was 16.4 feet (5 m) tall and weighed 24 tons (21.7 m-tons), the same as the four in Africa. elephant, The researcher said.
The new species is larger than the other giant rhinos of the extinct genus Near horn beastSaid Den Tao, a principal investigator and professor at the Institute of Vertebrate Paleovertebrate and Paleontology, Beijing Chinese Academy of Sciences.New family tree analysis Near horn beast Species containing P. linxiaense, Reveals how these ancient beasts evolved as they moved across Central and South Asia when the Tibetan Plateau was lower than they are today, Tao emailed live science. Told.
Relation: Photo: These animals were once giants
Researchers have known fossils from the Lincia Basin, located on the northeastern border of the Tibetan Plateau, since the 1950s when farmers began discovering “dragon bones,” Tao said. Bargains in the 1980s revealed a rare but fragmentary giant rhino fossil. It changed in 2015, with the full skull and jaw of one giant rhino individual, and three vertebrae from another. Both date back to the late Oligocene (33.9 to 23 million years ago).
When researchers saw the fossil, bone integrity and “huge size … [were] Tao performed an anatomical analysis in addition to the fact that the fossils were larger than those of other known species. Near horn beast Genus reveals that they previously belonged to an unknown Near horn beast seed.
Skull and jaw bones showed that P. linxiaense It had a huge head 3.7 feet (1.1 m) long. Long neck; two fang-like incisors pointing down.And a deep nose notch indicates that the animal had a trunk like Tapiridae.. According to Tao, the giant rhino has a trunk wrapped around a branch, which made it easy to peel off the leaves with its front teeth.
P. linxiaense Tao said he was standing on four long legs suitable for running, and his head could reach a height of 23 feet (7 m) “to see the leaves on the top of the tree.” It was.
Most species in Near horn beast Lived in Central Asia (now Mongolia and Kazakhstan), but one distant species, P. BagtienceI lived further south, now in western Pakistan.This distant place puzzled scientists, so Tao and his colleagues set out to see if they could identify the relationship between this species and other species. Near horn beast Species, including newly discovered ones P. linxiaense..
The team created a family tree of rhino ancestry by analyzing the anatomical structures of 11 giant rhino species and 16 other animal species of the superfamily Rhinocerotoidea, including two living rhinos. As a result of analysis, a huge mongolian rhino (P. asiaticum) Dispersed westward towards present-day Kazakhstan, the pedigree of its descendants expanded to South Asia, P. Bagtience In the early Oligocene, Tao said.
At that time, Central Asia was dry, but South Asia was relatively humid, with a mosaic of open forested landscapes, and it is likely that giant rhinos were looking for food. Said Mr. Tao.
In the late Oligocene, tropical conditions allowed giant rhinos to trek north and return to Central Asia.Seems to be far away P. Bagtience Crossed the Tibetan region and evolved into two closely related species: newly discovered P. linxiaense, Known from China, and P. Lepidum, Known from China and Kazakhstan.
Given that some of the world’s largest mammals made this impressive journey, the Tibetan region at the time was likely “not yet uplifted as a plateau,” Tao said. During the Oligocene it may have been less than 6,600 feet (2,000 m), and “giant rhinos may have been freely dispersed throughout the region,” he said.
The study was published online in the journal on Thursday (June 17th). Communication biology..
Originally published in Live Science.
The ancient giant rhino was one of the largest mammals in history to walk the earth
Source link The ancient giant rhino was one of the largest mammals in history to walk the earth