New evidence of Teng's carnival dragon "take-off": the "four wings" form.

On May 2nd a team of palaeontologists from Chinese mainland, Hong Kong, China, and Canada reported in the journal Nature Communications that a dinosaur, the Jianianhualongs Tengi, lived about 125 million years ago.
this is a small carnivorous dinosaur, slightly longer than 1 meter, front and rear limbs and tail have large feathers.
findings could help to understand the evolution of dinosaurs to birds, especially some important features associated with flight capabilities.
dinosaur fossil specimen is from a place called cabbage ditch in Liaoning Yi County, where the famous hot river biome fossils are found.
The Dalian Xinghai Paleontology Museum, the collection of dinosaur fossils, invited Xu Xing, a researcher at the Institute of Paleoververtebrates and Paleoanthropology of the Chinese Academy of Sciences, Philip Curry of the University of Alberta in Canada, Mike Pittman of the University of Hong Kong and Hu Dongyu of Shenyang Normal University, to study the important fossil specimen at the end of 2015.
According to Teng Fangfang, director of the museum, the Dalian Xinghai Museum of Paleontical Biology has a large collection of fossils from the Liaoxi region, which she hopes will play a popular role while also helping scientific research.
dinosaur fossil is just one of the research specimens provided by Dalian Xinghai Paleontical Museum for researchers in recent years.
nearly a year of research, the researchers officially published their findings.
based on its anatomical characteristics, the researchers classified the dinosaur as a toothed dragon.
of the closest dinosaur groups to the kinship of birds represented by the toothed dragons, it is very important for people to understand the transformation of dinosaurs to birds.
carnival dragon represents a transition type in the evolution of toothed dragons.
By comparing this with other toothed dragons, including Sinusonasus magnodens, the researchers believe that there is a "modular evolution" in the evolution of toothed dragons, in which parts of the body evolve into separate modules for independent evolution.
, for example, the forebrain and belt parts of the Teng's carnival dragon are relatively conservative and change little, but the skull and hind limbs evolve faster and are closer to the progressive toothed dragons.
researchers have only noticed this "modular evolution" in the past during the transformation of major biomes, but this study shows that "modular evolution" also exists in the evolutionary history of small groups.
most important information about the Rotten Carnival Dragon comes from feathers.
careful study of its preserved feather marks, the researchers believe it has feathers very similar to those of ancestral birds, showing the "four-wing" pattern that was widely seen during the early evolution of birds.
, the researchers found that the plumes on both sides of the tendon feather shaft of the Teng's carnival were different in width and narrow, similar to the asymmetrical fly feathers of birds.
many studies have concluded that the appearance of asymmetric fly feathers is related to the emergence of flight capabilities.
findings suggest that asymmetrical fly feathers, which are crucial to flight, appear earlier, and are likely to appear first in the dinosaur's tail, which is important for exploring how they evolved.
There are still many details to be worked out about how dinosaurs evolved into birds, and this discovery of a new species of toothed dragon will help researchers gain a deeper understanding of this important event in the history of biological evolution and provide new evidence for the evolution of early feathers.
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