How did dinosaurs become fossils_The mystery of dinosaurs in Lufeng, China

1. Types of dinosaurs:

Now, more than 200 dinosaurs have been discovered, which can be divided into two categories: carnivorous and vegetarian. Among the carnivores, the one we are most familiar with is Tyrannosaurus rex. Because it can be said to be the most ferocious dinosaur among dinosaurs, it got the name "Tyrannosaurus rex". There are many vegetarian dinosaurs, so I won’t introduce them here.

2. Habits of dinosaurs:

Dinosaurs like to live in groups, and they are all very "polite". The little one is afraid that if a big dinosaur comes while eating, the little one will definitely let the big one eat. Not only that, the old one will also let the young one go.

3. The mystery of the extinction of dinosaurs:

The extinction of the dinosaurs is still a mystery. But now people have two speculations about the extinction of the dinosaurs: one is that an asteroid hit the earth, shrouding the earth in smoke, and the dinosaurs were all extinct before the sun reached the sun. Another is that there was an acid rain at that time, and the dinosaurs and eggs were corroded and therefore became extinct. Which statement is correct remains to be further verified.

4. How did dinosaurs become fossils:

After the dinosaur died, the meat rotted and was buried in the ground. Later, the soil hardened and the dinosaur skeleton became a fossil. The characteristics of dinosaur fossils unearthed around the world are very different, but they generally only belong to a certain period and species of the Jurassic, or the individuals are incomplete, or they are found sporadically and are small in scale. The Lufeng dinosaur fossils have the following characteristics: high scientific research value, Scientific research and popularization of science and tourism are strong

The dinosaur problem is a multidisciplinary comprehensive research topic, which involves earth evolution, biological evolution, zoology, geography, botany and other disciplines. The dinosaurs discovered by Lufeng existed between 135 million and 180 million years ago. It spans three eras: the Triassic, the Jurassic, and the Cretaceous. Among them, the Jurassic era fossils are the most complete, covering the survival and evolution tracks of dinosaurs in the early, middle, and late Jurassic eras. Herbivorous, carnivorous, and Jurassic It is unique in the world that dinosaurs from the early, middle and late periods live in the same place. The world-famous Lufeng Xisaurus fauna is the oldest dinosaur fauna in my country, with a large number, high density and complete preservation; The Lufeng dinosaur fossils that have been excavated all face the east. Vegetarian dinosaurs and carnivorous dinosaurs that lived in different eras and were completely unrelated were buried together. These are questions that need to be further explored and answered by scientists.

5. The mystery of China’s Lufeng dinosaurs

Since the first discovery in 1938 by Academician Yang Zhongjian (1877-1979) and Bian Meinian, the founders of Chinese vertebrate paleontology research and the father of Chinese dinosaur research, there have been nearly 120 complete or nearly complete dinosaurs of 33 species in 25 genera, including primitive sauropods. to sauropods, from the Lower Lufeng Formation in the Early Jurassic to the Upper Lufeng Formation in the Middle Jurassic. The Yunnan Provincial Institute of Geological Sciences measured Laochangqing in Chuanjie Township, Lufeng County from October to November 1997 The Jurassic section near the village is located south of Lufeng, about 30 kilometers away. The section is located east of the Yuanmou Lvzhijiang fault and belongs to the Lufeng small basin sedimentary type. The section has complete top and bottom, simple structure, complete stratigraphy and fossils. Rich and convenient transportation. The great significance of the results obtained from this section lies in: first, the discovery of dinosaur fauna in the Upper Lufeng Formation of the Middle Jurassic in Yunnan for the first time; second, the discovery of two different fauna in the upper and lower layers of the same stratigraphic system at the same location. There is only one group of dinosaur fossils in the layers (upper and lower layers) in the world. Third, through plasma spectrum analysis, it was found that the dinosaur fossils contained extremely high elements of La, Y, Yb, and Sr, indicating that the death of the dinosaurs was related to the ecology at that time. The environment has an inseparable relationship. It is large in number, high in density, the most complete in preservation, and has experiential tourism value.

Lufeng Dinosaur Mountain, covering an area of about 7 square kilometers, is named after the rich abundance of dinosaur fossils. It is composed of Red Sand and Mudstone from the Lower Jurassic. The "Lufeng Saurus Fauna" is produced in this mountain. At present, Xu's family has been discovered Archaeosaurs such as Lufengosaurus, Lufengosaurus gigantea, and Lugosaurus qun's; therapsids such as Yunnan Bianshitherium and Azototherium sinensis; lepidosaur reptiles such as Lufengsaurus young's; Rui's Sinensis There are more than 30 species of vertebrate fossils in 25 genera, including fish and amphibians. More than 100 dinosaur fossils have been excavated. Two complete dinosaur fossil skeletons are still exposed on the mountain. They are large and small. Small bone fragments can be picked up everywhere in the mountains and fields. In addition, fossils of bivalves, gastropods, ostracods, phyllopods and plants are also produced. The individual intactness rate of Lufeng dinosaur fossils has reached a very high level, even small ones. The tail vertebrae, toe bones and the most fragile ribs during excavation are all well preserved, and the bone patterns are quite clear. Lufeng dinosaur fossils are mainly concentrated in Dawa Dinosaur Mountain and Chuanjie Dinosaur Mountain where the "World Dinosaur Valley" is located. There are more than 100 dinosaur skeleton fossils buried in the cross-section rock strata within an area of nearly 10,000 square meters. Such a high-density and diverse dinosaur fossil burial site is unique in the world and can be called a world wonder. It has been exposed There are 12 individual dinosaur skeleton fossils that can be identified within an area of more than 400 square meters. Among them, 11 giant sauropod dinosaur skeletons are nearly complete. The largest scapula is two meters long, and the body length of this dragon At 27 meters, it is the highest in Asia. It is highly ornamental, has an outstanding sense of suspense, and has outstanding tourism value.

The scale and quality of Lufeng's dinosaurs are unmatched by other places. They are unique and unique resources in the world. In February 1997, naturally exposed dinosaur fossils were discovered in Laochangqing, Chuanjie, 30 kilometers south of the county. In 440 A total of 8 dinosaurs and 5 turtles were excavated within a square meter, which is a miracle in the history of dinosaur excavation in the world. It was named: Sichuan Street Lao Changqing Dinosaur Fauna. Professor Kens Rigby, an American dinosaur expert who came to participate in the excavation, said: "The discovery of so many fossils in such a small area irrefutably proves that Lufengchuan Street is the place with the highest concentration, richest and highest research value of known dinosaur fossils in the world. Especially when early dwarfs were discovered in the same place. The dinosaur fossil groups from the Luo and Middle Jura periods are also unique in the world, forming a highly ornamental and suspenseful tourism resource. It is monopolistic, local and has cultural tourism value.

Since 1938, 507 species of paleontological fossils have been unearthed in Lufeng, including 25 genera and 34 species of dinosaurs. With the deepening of research, new species of dinosaurs are constantly being discovered. Lufeng is famous for its dinosaurs. , 28 dinosaur fossil sites, a total of more than 100 sites, have been discovered in the territory, and more than 30 species of vertebrate paleontology fossils have been produced in 25 genera. It is the richest, most complete, oldest and most primitive vertebrate paleontology fossil production area in China. At present, the Lufeng dinosaur has become the symbol of the county. Dinosaur sculptures, murals and souvenirs based on dinosaurs can be seen everywhere. In 1989, a dinosaur museum was built in the county seat, which successively displayed many mounted dinosaurs. In 1993, two dinosaur museums were built on Dinosaur Mountain. The fossils are buried in the museum. Dinosaurs have become the pride of Lufeng people. The county government designated October 26 every year as the "Dinosaur Culture Festival." The first "Dinosaur Culture Festival" in 1991 attracted merchants from all over the country and domestic and foreign merchants. News units, and have successively reported and introduced the Lufeng Dinosaur Festival, allowing people to better understand the "Hometown of Dinosaurs". In previous overseas exhibitions organized by the State Administration of Cultural Heritage, the Lufeng dinosaur fossils have received wide acclaim. It attracted many tourists to watch. Just take the situation when it was exhibited in Japan as an example. When it was exhibited in Japan, thousands of people lined up late at night every day to watch it when it was opened the next day, even in the pouring rain. Despite the heavy rain, no one left, which shows the value of Lufeng Dinosaurs and the interest of overseas tourists. There are endless mysteries to be solved.

6. The Mystery of Dinosaurs in Sichuan Street, China

The newly discovered Chuanjie dinosaurs are still under study. Experts estimate that the research on Chuanjie dinosaurs will be rich, vivid and challenging. With the deepening of research, new dinosaur species will continue to be discovered. Dinosaur remains Many world-wide mysteries have been revealed, and revealing the secrets is a global issue. Lufeng dinosaurs are famous for their large number, complete types, high density, complete preservation, long geological time span, carnivorous dinosaurs and herbivorous dinosaurs living in the same corner and up to now. The many unsolved mysteries of not having found a single dinosaur egg fossil are fascinating, and they all reflect the uniqueness and magic of the Lufeng dinosaur family.

animal tags： Dinosaurs species fossils habits