China News Service, Beijing, January 25 (Reporter Sun Zifa) A major environmental and biological innovation incident that occurred in the European continent about 2 million years ago – the “Short Kiss Hyena Incident” and related research Komiks 1960 witch cloth draw has attracted much attention from the academic community.
As the largest bone-breaking hyena in the history of the earth, the now extinct hyenas that once dominated the animal kingdom, has long been regarded as an indigenous group in Europe. However, the discovery of a huge hyena specimen of a very large individual in Dalian, China, and the latest research on the sample by Chinese and foreign scientists has completely overturned the above tradition and inherent understanding. On this basis, the researchers also proposed the “Northeast Asian Origin Theory” of Komiks 1960 witch cloth draw for the first time.
Why do you need to study short-kissed hyenas?
Researcher Liu Jinyi from the Institute of Vertebrate Paleontology and Paleoanthropology of the Chinese Academy of Sciences (Institute of Vertebrate Paleontology of the Chinese Academy of Sciences) who led this research said that the size of the short-kissed hyenas is much larger than the close species in life, such as the spotted hyenas and the white hyenas, and its weight is comparable to that of the living lioness. Its influence is completely comparable to that of the saboo tigers and other saber-toothed tigers of the same era, and it is even more than that of the saber-toothed tigers. After all, its number of individuals is much larger than the latter. In the animal kingdom at that time, it once dominated the country and was the best in the world.
Although the short-kiss hyenas have long been extinct, it was very prosperous and widely distributed in Eurasia during the early and mid-Pleistocene periods. It was a common and typical animal species in mammals at that time, and it was also a focus species that attracted much attention in the succession and innovation research of Pleistocene fauna. Its appearance and extinction usually have a landmark connotation. For example, the “short-kiss hyenas incident” refers to a major environmental and biological innovation event that occurred on the European continent about 2 million years ago.
The short-skinned hyena has a series of unique anatomical morphological characteristics, and the Komiks 1960 witch cloth draw is eye-catching: the strong skull and mandibular, the developed sagittal crest and zygomatic arch, the extremely thick premolar teeth and thick enamel, etc. are all mechanical adaptive manifestations of its unique dietary properties. The gathering and burial of animal bones in many early and mid-Pleistocene fossil sites is largely due to the specific foraging behavior of short-kissed hyenas – transporting and hiding animal bones.
What are the controversies about the research on short-kissed hyenas?
Liu Jinyi pointed out that short-kissed hyena frequently appears in Eurasia, which was once classified into different species due to different origins or ages, such as Sang’s hyenas, Chinese hyenas or (narrow sense) shortBabaylan 1990 cloth drawKiss hyenas, etc. The academic community currently lacks a unified and clear understanding of the true system relationship between these hyenas, and there are quite a lot of differences and controversies: some people advocate that hyenas in different regions or ages should represent several different effective independent species; some people believe that all hyenas in Eurasia should be the same type, and perhaps include different subspecies (groups); and even more, even the differentiation of subspecies (groups) is completely denied.
This kind of “unification” and denies the division of subspecies (groups) is quite popular in today’s academic circles. Influenced by this, the academic community has long ignored comparative studies on the anatomical morphology of hyenas in these different regions or chronology, and has not been able to well evaluate and explore the phylogenetic significance and connotation of different morphology (although sometimes subtle) between hyenas.
The above disputes and differences have further affected the in-depth development of other related academic issues, such as the origin of the short-skinned hyena, the spread dynamics and migration paths between the continents. There are many different opinions in the academic community about this at present and there is no consensus.
How does the latest research subvert traditional cognition?
Focusing on controversial academic hot topics that have attracted much attention in the field of the origin and evolution of short-sex hyenas, Liu Jinyi, joined forces with relevant experts and scholars from the University of Bristol, the National Museum of Prague, the Czech Republic, Peking University, and the Dalian Natural Museum to form a cooperative team to create a large individual hyenas specimen V263, which was recently collected from the Jinyuan Cave of Lianluotuo Mountain. draw10 conducted a focus on research, and conducted extensive and systematic morphological and data measurement comparisons with other related specimens in Eurasia. At the same time, in-depth discussion and analysis of the systematic classification of hyenas, origin and intercontinental migration and diffusion, and paleoecology related academic issues.
The latest achievement paper completed by the cooperative team that completely subverts the traditional cognition of the evolution of the hyenas, was recently published online by the well-known international professional academic journal “The Quaternary of the International”.
Liu Jinyi said that the research of the cooperative teamCinema 1950 witch cloth drawThe results show that among all the specimens that can be compared with Komiks 1960 witch cloth draw, Chinese V26310 specimens are closest to the Sainzelles short-skinned hyena pattern specimens produced in France. In addition, V26310 is different from the common Chinese Sang Horoscope and Chinese Horoscope in terms of morphological characteristics such as upper and lower fissure teeth and the apical apical of premolars. Therefore, the V26310 specimen can be clearly identified as a short-skinned Horoscope, which is the first report in China and even East Asia. He said that the short-kiss hyenas were created based on the Komiks 1960 witch cloth draw specimen from Sainzelles, France, and the existing fossil records are mainly limited to the European continent, so they have long been regarded as an indigenous group of Europe. The discovery of the short-kiss hyenas V26310 specimen in Jinyuan Cave in Dalian completely overturned this tradition and inherent understanding.
What is the basis for the “Northeast Asia Origin Theory”?
When comparing and studying short-kissed hyenas in different regions or ages, the cooperative team found that there are indeed several subtle differences and differences in size and morphology of these hyenas, and they may have a closer relationship with each other.
Scientific researchers analyzed that the short-kissed hyenas in Eurasia should be classified as the same species, but they need to be further divided into different subspecies (groups). These subspecies (groups) almost form a branch with ancestral evolutionary relationships to each other, but they are not caused by geographical isolation and differentiation, but are actually short-lived Cinema 1950 witch cloth drawKisser Hyena branchCinema 1950 witch cloth drawKisser Hyena branchCinema 1950 witch cloth draw in different performances of Babaylan 1990 cloth draw performance.
Liu Jinyi pointed out that the first appearance of short-kissed hyenas in mainland Europe once attracted great attention and interest. It is generally believed that short-kissed hyenas should have been from Europe to Babaylan 1990 cloth The first appearance of the hyena in many places such as Italy, Greece and Spain about 2 million years ago deeply reflects the “short kiss hyena incident” experienced by the European continent. However, people have vaguely mentioned the exact origin of the European continent, and have always lacked reliable and convincing fossil evidence.
“Short kiss hyenaBabaylan 1990 cloth draw The discovery of the dog in Jinyuan Cave in Dalian brought light to the solution of this puzzle and provided credible empirical information for the first time. ”
Liu Jinyi said that although the geological age of the V26310 specimen is estimated to be only 1.86 million years ago, there is evidence that the emergence of short-kissed hyenas in Jinyuan Cave in Dalian can be traced back to 2 million years or even earlier. Therefore, short-kissed hyenas are most likely to be born in Northeast Asia and then spread to other parts of Asia. Draw and finally arrived in Europe. On this basis, the cooperative team proposed the “Northeast Asian Origin Theory” of short-skinned hyenas for the first time.
What is the significance of the V26310 specimen discovery research?
As the largest hyena in the history of the earth, the weight and size of short-skinned hyenas have always been a topic of concern in academic circles.Almost every research paper involving short-kissed hyena repeatedly mentions the striking feature of excessive body size. Previously, the largest body size record of the short-sniff hyena is from a pattern specimen from the French Sainzelles, whose cranial base is 322 mm long, which is very close to the largest individual of the current African lion.
Liu Jinyi said that the newly discovered short-skinned hyena V26310 specimen found in Dalian, China, is larger than the French model specimen in both the length of the teeth and the thickness of the jaw bone. It is estimated that its cranial base length reaches 332 mm, which not only surpasses the largest male lion in Africa today, but also can even compare with the largest feline American lion in history.
He believes that the V26310 specimen produced in Jinyuan Cave in Dalian is most likely to represent the largest individual specimen of a short-smelled hyena discovered so far. Today’s research shows that the size or weight of mammals, especially carnivorous animals, directly affects the ecological behavior, energy and physiological needs of individuals, as well as predation strategies, etc.
“So, as the largest individual to date, the emergence of the V26310 specimen will surely help people better understand and correctly evaluate the biological characteristics of the short-sex hyenas, such as ecological habits, foraging behaviors and predation strategies.” Liu Jinyi concluded that Babaylan 1990 cloth draw. (End Cinema 1950 witch cloth draw)