The scientist from the Institute of Plants and Animals Ecology, Russian Academy of Sciences (Ural Branch), has made a description of the giant dear remains, found in the Ural, and has determined their age. Giant deer Megaloceros giganteus originated as a species in the preglacial epoch, lived through the glaciation period and died out about 8-9 thousand years ago after the climate had become warmer. The remains will help to investigate how the giant dear lived and why this species disappeared. The research has been carried out with the help of the Russian Foundation for Basic Research grants 02-04-49431 and ‘The evolution of the mammalian fauna and flora in Western, Central and Eastern Europe during the Pleistocene-Holocene transition (25-10 kyr B.R.)’.
About ten thousand years ago when the glaciation period was already over, the giant or the so- called big-horned deer, contemporary of the mammoth and the wooly rhinoceros, still inhabited the Eurasian plains. They were real giants among ungulate animals: their horns with big blades, which resembled those of the fallow-deer or the elk, reached up to four meters in width. The deer used to pasture on humid meadows and frequently fell a prey to primeval hunters. Then the species has become extinct. Modern scientists are still investigating possible reasons for the giant deer disappearance.
P. A. Kosintsev, a researcher from Yekaterinburg, has studied the remains of the giant deer, found during the last decades in the Middle and South Ural. With the help of A. Lister and A. Stuart, British colleagues from the Natural Environment Research Council (NERC) , P. A. Kosintsev has determined the age of the findings. To this end the scientist used the radiocarbon analysis method with the accelerative mass-spectrometry. It turned out that the animals, the bones of which were dated, perished during the periods when the climate was changing: warm periods were being replaced by the cold ones and vice versa. Although the glaciation period ended about ten thousand years ago, some long periods of the climate cooling down and warming up took place repeatedly. It is very likely that these climatic changes caused the extinction of the giant deer species. An indirect indication that the climatic changes affected the disappearance of the species provides the fact that the bones of the deer were found in the same horizons with the remains of a variety of animals, this proves easy adaptability of the species to various surrounding animal species.
Sergey Komarov | alfa
22.02.2018 | Albert-Ludwigs-Universität Freiburg im Breisgau
Separate brain systems cooperate during learning, study finds
22.02.2018 | Brown University
Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.
But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...
Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.
The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
22.02.2018 | Life Sciences
22.02.2018 | Physics and Astronomy
22.02.2018 | Earth Sciences