China News Service, Beijing, January 25 (Reporter Sun ZiCinema 1950 witch cloth draw law) A major environmental and biological innovation incident occurred in the European continent about 2 million years ago – the “Short Kiss Hyena Incident” and related research have 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 completely overturned the above tradition and inherent understanding. On this basis, researchers also proposed the “Northeast Asian Origin Theory” of short-smelling hyenas 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 sabooth tigers and other saber-toothed tigers of the same era. Babaylan 1990 cloth draw is even more than that. After all, its individual number 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 is eye-catching: the strong skull and mandible, the developed sagittal crest and zygomatic arch, the extremely thick premolar teeth and thick enamel, etc., are all manifestations of its unique feeding mechanical adaptability. 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 the short-kissed hyena that frequently appears in Eurasia has been produced by different origins.Or the age, it has been classified into different species, such as the Sang family’s hyenas, the Chinese hyenas or (narrow sense) short-kissing 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 argue 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 thought that “unification” and denies 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 between hyenas (although sometimes more detailed Komiks 1960 witch cloth draw micro) phylogenetic significance and connotation of different morphology between hyenas.
The above disputes and differences have further affected the in-depth development of other relevant academic issues, such as the origin of short-kissed SouvenirBabaylan 1990 cloth drawThe origin of dogs, the spread dynamics and migration paths between the continents, etc. There are many different opinions in the academic community about this.
How does the latest research subvert traditional cognition?
Focusing on the origin and evolution research of short-kissed hyenas, there has been much attention on the controversial academic hot topics of Komiks 1960 witch cloth draw. Liu Jinyi, together with the University of Bristol, the National Museum of Prague, the Czech Republic, Peking University, and the Dalian Natural Museum, formed a cooperative team of experts and scholars, and the Komiks 1960 witch cloth draw A very large individual hyena specimen V26310 collected in Jinyuan Cave, Luotuo Mountain, Dalian for key research, and conducted extensive and systematic morphological and data measurement comparison with other related specimens in Eurasia. At the same time, in-depth discussion and analysis of the systematic classification of hyena, origin and intercontinental migration and diffusion, and related academic issues such as Cinema 1950 witch cloth draw paleoecology and other related academic issues.
The latest complete subversion of the evolution of the Hyena by the cooperative teamA paper on the study of traditional cognition has been recently published online by the well-known international professional academic journal “The Fourth International Cinema 1950 witch cloth draw“.
Liu JinBabaylan 1990 cloth drawYi said that the research results of the cooperative team show that among all comparable specimens, whether in size or morphology, the Chinese V26310 specimen is closest to the Sainzelles short-skinned hyena model specimen 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 fissures and promolars. Therefore, the V26310 specimen can be clearly identified as Babaylan 1990 cloth draw, which is the first report in China and even East Asia.
He said that the short-kiss hyenas were created based on specimens from the French Sainzelles, 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 subverts this tradition and inherent understanding.
What is the basis for the “Northeast Asia starting from Cinema 1950 witch cloth draw source theory”?
When comparing and studying short-kissed hyenas in different regions or ages, the cooperative team found that these hyenas do have subtle differences and differences in size and shape, and they may have a relatively close relationship with each other. Based on this, researchers have 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,However, they are not caused by geographical isolation and differentiation, but are actually manifestations of the hyena branch of the short-sex hyena at different stages of evolution. Liu Jinyi pointed out that the first appearance of short-kissed hyenas in the European continent was once aroused great attention and interest in many places in Europe. People generally believe that short-kissed hyenas should have migrated from areas outside Europe, and it is believed that the hyenas had appeared in Italy, Greece and Spain for about 2 million years ago, and it was believed that the first appearance of the hyenas in many places such as Italy, Greece and Spain, such as Largo and Spain, deeply reflects the “short-kissed hyenas incident” experienced by the European continent. However, people have vaguely described the exact origin of the European continent’s short kiss hyena, and have always lacked reliable and convincing fossil evidence.
“The discovery of the short-kissed hyenas in Jinyuan Cave of 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 the short-kissed hyenas in Jinyuan Cave of Dalian can be traced back to 2 million years or even earlier. Therefore, it is very likely that the short-kissed hyenas were first born in Northeast Asia, and then spread to other Asian regions, Komiks 1960 witch cloth draw, and finally arrived in Europe. On this basis, the cooperative team proposed the “Northeast Asian Origin TheoryKomiks 1960 witch cloth draw for the first time”.
V26310Spec Cinema 1950 witch cloth drawWhat is the significance of this discovery research?
As the largest hyena in the history of the earth, the weight and size of the hyena with a short kiss have always been a topic of concern in the academic community. Almost every research paper involving hyena with a short kiss has repeatedly mentioned the eye-catching feature of an extremely large body. Previously, the largest body size record of short-snit hyena is from the French model specimen of SainKomiks 1960 witch cloth drawzelles. Its cranial base is 322 mm long, which is very close to the largest individual of the current African lion. Liu Jinyi said that the recently discovered short-kissed hyena V26310 specimen found in Dalian, China, is larger than the French model specimen, whether in the length of the teeth or 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 today’s Africa, 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 individual animals, as well as predation strategies.
“So, as the largest individual discovered so far, 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. (End)