Weighs up to 7,700 pounds, Elasmotherium sibiricum– a popular extinct hair pinch known as the "Siberian unicorn" – he thought he had disappeared as far as 200,000 years ago. A recent fossil analysis suggests that this species is still around 39,000 years ago, and that Ice Age conditions, not human hunters, contribute to its deterioration.
Paleontologists know about 250 rhine species, five of which still exist today. Amongst the most amazing of these rhinos was Elasmotherium sibiricum– the Siberian unicorn. For the Neanderthals and the modern men who lived alongside, and possibly hauling this huge creature in Eastern Europe and Central Asia, she must be a striking look and horrible. Fossil evidence suggests Elasmotherium has weighed over 3.5 tons, covered with thick hair hair, and playing a horn of biblical pieces, possibly as long as three feet (1 meter) long.
Unfortunately, however, the Siberia unicorn dies in the long run. The date of previous fossils suggested that there was a close date between 200,000 and 100,000 years ago, before the large-scale late Lateral Megafaunal dropping, which was about 40,000 years ago. New research published this week in Nature of Ecology and Evolution now offers a more reliable estimate, dating to a decline Elasmotherium at some point between 39,000 and 35,000 years ago. The dying of the Siberia unicorn can now be linked to the recent dysfunction in the Cuban Megafaunal, an event that witnessed the end of the worm mammoth, Irish sparrows, and an octagonal battle.
Writing in their new study, led by Adrian Lister of the Museum of Natural History in London, the researchers said "no absolute date, genetic analysis or ecological quantitative assessment of this species [had] has been done, "which explains why the previous dumping estimate was so far away. The new study overcomes these defects, and includes the use of fossil dating techniques update.
For the study, an international team of researchers from the UK, the Netherlands, and Russia took a look at more detail on 23 Elasmotherium specimens, including a pristine skull held at the Museum of Natural History. An improved radiocarbon dating technique has led to revised disappearance dates; Many samples were exposed in conservation materials, which were preparing to prepare for carbon dating.
"Some of the samples we studied were very contaminated and the radiocarbon date was very challenging," said Thibaut Devièse, a researcher at the Oxford School of Archeology and co-author of the study, in a statement. "For this reason, we used a new method of removing one amino acid from the bone collagen to get very accurate results."
In addition, researchers have been able to collect DNA for the first time ever Elasmotherium fossils. The following genetic analysis showed that the Siberia unicorn split from modern rhinoceros about 43 million years ago, "settled a debate based on fossil evidence and confirmed that the two lines had been replaced by the Eocene," the researchers wrote in the study. Rhinos this Ice Age is the last species of "remarkable and ancient line," according to the research.
The Siberia unicorn lived alongside modern anatomical and Neanderthal people. The ancient guys may have prey on the remarkable rhinos so inadequate as it could appear. Early people, are likely to type Homo erectus, hunting rhinos in the Philippines about 700,000 years ago. But while there is rhinoceros on the hominid menu, this new research suggests that climate change, and not hunters, is responsible for it ElasmotheriumRest.
These rhinos, as we know now of the new research, live during the Ice Age, just before the last Glacier Maximum – the period where the ice sheets covered their area most, about 26,500 years ago. Earth was susceptible to changing shifts in the climate during this period, producing drought, desert, sea levels, and constant spread of glaciers. These ancient disorders are fatal to many species, Elasmotherium among them.
For the Siberia unicorn, this meant the loss of habitat, and thus, the disappearance of a critical food source, as the new study assumes. In experiments, Lister and his colleagues analyzed static isotope ratios of fossil ridge teeth. The researchers tried to connect different plants with carbon isotopes and nitrogen levels in their teeth. The Siberia unicorn, as revealed by this analysis, lived in a dry camer environment where they touched dry, dry grass. The rhinos, with their specialty grazing lifestyle and low natural population numbers, can not adapt rapidly to the rapidly changing conditions, the study is suggest.
Climate change, and not human, was therefore responsible for dissolution E. sibiricum. Interestingly, there is a conclusion that research is similar, but unconnected, means that scientists claim that many Ice Age megafaction extracts were not responsible for people. Unfortunately, it is not possible to say the same about the continuous mass sixth eradication, which is certainly the case.[Nature Ecology & Evolution]