But recently, paleontologists have had to change this view and push the herbivorous history of dinosaurs to the early Cretaceous period, 125 million years ago, grasses began to appear. This was discovered during the study of fossils of the dinosaur Equijubus found in China. Mount Mazong is located at the northern end of the Hexi Corridor, in present-day Gansu Province, China. The mountain is named because it looks like a horse’s mane blowing in the wind. Mazong Mountain is a desolate place, but beneath that gravel are the remains of creatures that died hundreds of millions of years ago. In 2000, paleontologists from China and the United States formed a joint expedition to unearth paleontological fossils in the Mazong mountain area. During this excavation, paleontologists discovered a large number of fossils. Chinese paleontologist You – Hailu studied the fossils of a new dinosaur species and he named this dinosaur Equijubus. The genus name is derived from the Latin words “equus” meaning “horse” and “juba” meaning “mane”, the genus name meaning “horse mane” because the fossil was found in Mount Mazong. The new species was given the full name Equijubus normani, with “Normani” being named in honor of the famous British paleontologist David B. Norman. Illustration. Equijubus can be considered an intermediate dinosaur between Iguanodon and Hasrosauridae. Equijubus has a fairly large body when compared to a “basic” Hasrosauridae, but they can still run on two legs after being chased by predators. Fossil specimens of this dinosaur include skulls, lower jaw bones, cervical vertebrae, dorsal vertebrae and other parts. Through fossil analysis, it can be seen that Equijubus belongs to the primitive Hadrosauridae, it already possesses some features of Hadrosauridae, but its skull also has obvious features of Iguanodon. Paleontologists surmise that the dinosaur Equijubus could be up to 7 m long, 2 m high and weigh 2.5 tons, almost the size of a small truck. Equijubus would have had a long head, a horn beak on the front of its mouth and flat teeth on the inside of its cheeks, allowing it to chew on hard plants. Equijubus also have a robust body, they often walk on all fours and run on two legs when fleeing predators. Although there are not many fossils of this species, the discovery of Equijubus has great significance for paleontology. As a very primitive Hadrosauridae, Equijubus has shown that the Hasrosauridae may have originated in Asia and that they evolved directly from Iguanodon. 14 years after the Equijubus species was named, paleontologists are once again studying their fossils using the latest technology. They found evidence of herbivorous dinosaurs actually eating grass in fossils! On December 21, 2017, You Hailu and other paleontologists published a research paper titled “Dinosaur-related cuticles and crystals from the Chinese Gramineae family of the Cretaceous Period” on National Science Journal of China. The paper mentioned that the microstructure of primitive herbaceous plants (herbs, rice) was silicified between the teeth of the dinosaur Equijubus. This suggests that herbaceous plants were originally the food of this dinosaur. In fact, to answer the question of whether or not herbivorous dinosaurs ate grass, we need to know that the grass family is a large family of plants with more than 650 genera. Rice, wheat, corn, millet, sorghum, etc… the plants that we cannot live without are all grasses, and many other plants that we can eat are also grasses. People have always doubted the existence of the grass family, and the time period of its appearance is also quite unclear. And in the past, scientists always thought that they appeared after dinosaurs. But through the discovery of secrets from the fossils of the dinosaur Equijubus, we have learned that grass appeared on Earth 125 million years ago. This means that on Earth, dinosaurs of that time also had herbivorous habits (literally eating grass). The earliest known seed-bearing plants can be traced back to the Middle Jurassic or earlier, 164 million years ago. It was discovered during the Boda Jurassic period in Inner Mongolia. Although this plant is only a few centimeters tall, it already has roots, stems, leaves, and fruits.

Climate change is one of the main causes of extinctions worldwide. 5 mass extinctions Dinosaurs became extinct in the Jurassic, more than 200 million years ago. * Ordovician-Silurian Extinction: About 440 million years ago The first mass extinction on Earth occurred at a time when organisms such as corals and shellfish filled the world’s shallow waters but had yet to venture to land. Life itself has begun to spread and diversify, first appearing around 3.7 billion years ago. But about 440 million years ago, a climate change caused sea temperatures to shift, and much of the life in the ocean died out. At the end of the Ordovician, mass glaciations covered the southern supercontinent, Gondwana. According to a study published in the journal Oceanology, glaciation on this scale has stripped away high proportions of the world’s water and dramatically lowered global sea levels, depriving the world of vital habitats. species, destroying the food chain and reducing fertility, according to a study published in the journal Oceanology. However, not all scientists agree with this. According to National Geographic, other theories suggest that the toxic metal may have dissolved into seawater during periods of oxygen depletion, wiping out marine life. Other scientists suggest that a gamma-ray burst from a supernova ripped through a giant hole in the ozone layer, allowing deadly ultraviolet radiation to kill life below. According to APS News, there is a Another theory is that volcanoes are the cause. * Late Devonian Extinction: Over 365 million years ago The Devonian period witnessed the rise and fall of many prehistoric marine species. Although by this time animals had already begun to evolve on land, most of life was swimming through the oceans. Until vascular plants, such as trees and flowers, have the potential to cause a second mass extinction. According to the BBC, as plants develop roots, they inadvertently transform the land they inhabit, turning rocks and rubble into soil. This nutrient-rich soil then runs into the world’s oceans, causing algae to bloom on a massive scale. These blooms essentially created giant “dead zones,” areas where algae take oxygen from the water, suffocating marine life and wreaking havoc on the marine food chain. Species that could not adapt to reduced oxygen levels and lack of food died. However, this theory is still being debated, and some scientists believe that volcanic eruptions are responsible for the drop in oxygen levels in the ocean, according to a study in the journal Geology. A species of sea monster that has been wiped out from the world’s oceans is the 10 m long armored fish called Dunkleosteus . * Permian-Triassic extinction: ~253 million years ago This extinction event is the largest event that has ever occurred on Earth. It wiped out about 90% of all species on the planet and wiped out the reptiles, insects and amphibians that roamed the land. What caused this catastrophic event was a period of rampant volcanism. According to the Sam Noble Museum in Oklahoma, in the ocean, rising levels of carbon dioxide dissolve into the water, poisoning marine organisms and depriving them of their oxygen-rich water. Rising sea temperatures also reduce oxygen levels in the water. Corals are one of the hardest hit groups of marine life – it takes 14 million years for oceanic reefs to rebuild as they once were. * Triassic-Jurassic Extinction: About 201 million years ago The Triassic period was the time when dinosaurs began to inhabit the world. Unfortunately, many volcanoes were also erupting at that time. While it’s still not clear exactly why this fourth mass extinction occurred, scientists suggest that massive volcanic activity occurred in an area of ​​the world now covered by the Atlantic Ocean. cover . Similar to the Permian extinction, volcanoes released huge amounts of carbon dioxide, causing climate change and devastating life on Earth. Global temperatures rise, ice melt, sea levels rise and acidification. As a result, many marine and terrestrial species became extinct; These include large prehistoric crocodiles and several species of flying pterosaurs. All dinosaurs were killed in the fifth mass extinction. Scientists estimate that many species that can fly, burrow or dive into the depths of the ocean survive. For instance, the only true descendants of dinosaurs living today are modern-day birds – more than 10,000 species are thought to have descended from survivors. Is the 6th going? According to The Conversation, scientists define a mass extinction when about three-quarters of species die out in a short geological time, i.e. less than 2.8 million years. Currently, humans are in the early stages of the latest mass extinction, which is happening much faster than any other species. According to the International Union for Conservation of Nature (IUCN), since 1970, populations of vertebrate species have decreased by an average of 68% and now more than 35,000 species are considered threatened with extinction. During the 20th century, as many as 543 species of terrestrial vertebrates became extinct, according to a research paper in the journal PNAS. Since the beginning of the industrial revolution in 1760, humans have been a major factor in Earth’s current environmental crisis. From greenhouse gas emissions and ozone depletion to deforestation, plastic piling and the illegal animal trade, humans have been proactively depriving the world of some species and threatening many others. Ecotourism is an industry that drives conservation efforts around the world, but it is on the verge of collapse since global travel restrictions were introduced. Without tourist income, conservationists are having a hard time protecting vulnerable species from poaching, while the COVID-19 pandemic is intensifying. The New York Times reported. Rhinos in Botswana, feral cats in South America and tigers in India have all been targeted in the past year. In the context of the current pandemic, the wildlife market has become the focus of attention for not only being environmentally irresponsible but also potentially endangering human health through infectious diseases. from animals to humans – such as the COVID-19 pandemic. These markets, which trade in live exotic animals or products derived from them, are found all over the world. For example, bear farms in Asia trap 20,000 Asian black bears for bile, leading to a decline in wild populations. Another potential solution to combat extinction could be the cloning of species. In February 2021, scientists revealed they had successfully cloned a black-footed ferret from an animal that died more than 30 years ago. Native to North America, these small mammals were thought to be extinct until a small colony was found in the early 1980s, where they were engaged in breeding and reintroduction programs. across America. The cloning process is similar to that of Dolly the sheep in the early 1990s.

Welcome to the hotel of dinosaur robots. (Photo: Internet) The check-in process of visitors is easy when the two unique dinosaur receptionists at Henn na Hotel can speak 4 foreign languages: Japanese, English, Chinese and even Korean Country. Thanks to the tablet system, you can completely choose the method of communication with these interesting employees without having to worry about the language barrier. Coming here, you will experience the feeling of “interacting” with the robot dinosaurs. (Photo: Internet) More specifically, these two employees are also able to communicate using “body language” thanks to their long clawed hands and simple pre-programmed sentences. Passengers proceed to check-in with the “help” of the dinosaurs. (Photo: Internet) The hotel’s robots and management systems were designed by Kawazoe Lab, the Institute of Industrial Sciences at the University of Tokyo, and construction company Kajima. According to the hotel managers, the service robots here are very friendly and operate extremely efficiently. These dinosaurs are very friendly! (Photo: Internet) Not only stopping at the front desk, the interesting and uniqueness is still waiting for visitors when they come to the room. In each room, in addition to the necessary equipment that every hotel has, at Henn na Hotel, there are also small robot staffs that assist guests with everything from changing TV channels to turning on music. Inside a room at the Henn na Hotel. (Photo: Internet) Besides, this place is also equipped with many other modern technologies, such as not needing a key but using facial recognition to open the room door. Each room has sensors to control the lighting system, if no one is in the room, it will be controlled to turn off automatically. The space of the hotel is also designed in the style of “jungle” with different large and small dinosaurs. (Photo: Internet) Although most of the work is done by robots, the Henn na Hotel still has operators behind, especially the security department. Accordingly, security staff will monitor the hotel through the camera system to ensure the safety of guests as well as prevent the risk of expensive robots being stolen. These people also help with technical problems in the robots, if any. One of the branches of the Henn na Hotel. (Photo: Internet) In addition, housekeeping is a step that robots cannot do, so it also requires human hands. It is known that the price of staying at Henn na Hotel is about 9,000 yen ($72) per double room, much cheaper than other hotels of the same class.

A treasure discovery site with lots of gold bars and gold coins is located inside an old house in the town of Morez in the Jurassic region, eastern France. According to experts, all of the old metal belonged to a wealthy merchant family in the area at that time. However, the last life of the family had no children. Mayor Laurent Petit said the three-storey building in the center of town was home to four brothers and sisters without children. The last one passed away at the age of 90 last year. Then, the property’s legal heir did not use the house and sold it to the city hall for more than $ 156,000. The old house has been abandoned for a long time on a land called Maison Jobez by the locals. Recently, the town hall staff conducted a house cleaning to prepare for the city renewal campaign when they discovered the treasure full of gold. They discovered gold in two separate waves. Specifically, for the first time, employees found 5 boxes of gold bars and coins worth more than $ 600,000 on the back of a dusty shelf. A second time, when opening a locked safe in the closet, the staff found gold coins worth about $ 180,000. Mayor Laurent Petit said: “The local government was extremely confused and surprised to find so many gold bars and gold coins. None of us had ever held a gold bar. We just saw it in the pictures and thought that the gold bar must be very large, but here each one weighs only about 1 kg, the size of a cigarette pack “. The town hall intends to use the gold in this surprise treasure to reinvest back into the development of the area. Mayor Laurent Petit shared that the original home seller knew inside the three-story house contained treasure but believed it was gone. Mayor Laurent Petit said: “In the house is full of furniture and there have been several generations living without throwing anything away.”

Chinese paleontologists have found ancient insects, snakes, ancient birds and even dinosaur tails in fossil Burmese amber. Thanks to the special preservative properties of amber, these fossils have retained their original shape after 100 million years. One of the dinosaur feathers discovered in the amber piece was damaged by chewing and the markings are similar to the feathers of modern birds with parasitic lice. Feather is one of the types of “special impurities” preserved in Burmese amber, including neck feathers and insect feathers. Not long ago, two pieces of feathered amber from Myanmar attracted paleontologists because through microscopic observations, the researchers noticed some ancient bugs in the feathers. Although these bugs are small and hard to see, paleontologists have found that they have unique and striking habits. The newly discovered insect is named Mesophthirus engeli, revealing the early makeup of the lice ancestor. Mesophthirus engeli has no wings and a body similar to a lice. The team found that they chewed very vigorously through the marks of a dinosaur’s fur. A team of researchers from the Capital Education University of China, the Chinese Academy of Sciences, the Capital Medical Science University, the National Museum of Natural History, and the Russian Academy of Sciences studied the studies. Small insects preserved in amber and discovered this particular beetle. Archaeologists have named this tiny insect Mesophthirus engeli with the genus “Mesophthirus” from the Greek word and the name “engeli” is dedicated to Michael S. Engel, a famous paleontologist. Americans, in recognition of his outstanding contributions to the study of ancient insects. The earliest appearing fur-eating insect was thought to be Megamenopon rasnitsyni. The lice fossils were unearthed in Germany 44 million years ago, according to Chungkun Shih, study author at the Smithsonian Institution’s Museum of Natural History. Researchers also found evidence of Jurassic and Cretaceous parasitic parasites 66 to 201 million years ago. This ancient bug was very small with a length of less than 0.2 mm, so researchers had to use an electron microscope to see its shape. Mesophthirus engeli looks very much like today’s lice, but it has a larger head with black dot-like eyes on the sides and two tentacles with three long spines on top of the head. Mesophthirus engeli can be said to possess a body “three rings as one”, with the head, chest and abdomen equally wide, six feet short, with claws and long spines at the end, can be grasped. This finding suggests that the insect’s feathering behavior has originated at least in the mid Cretaceous period. Although it looks like a lice, the Mesophthirus engeli species is far different from modern lice and lice. Hence, paleontologists established a new ancient taxon of insects – Mesophagous caterpillars. Compared with the body, the mouth of Mesophthirus engeli is very large and strong, two large jaws are serrated, capable of chewing very strongly. In addition, the researchers also found that in the amber pieces containing these ancient bugs all had the presence of feathers and they all existed signs of damage: broken niches formed near the body. feathers and feathers are also broken. The marks of damaged feathers resemble those left by a feather-eating bug after chewing on the feathers. And obviously, the culprit of these traces was none other than the Mesophthirus engeli species. The origin and early evolution of the hairy trait in insects is inherently ambiguous due to the lack of records of Mesozoic fossils – the period of tectonic, climatic and progressive activities. chemical. Blood-sucking insects were found during the Jurassic and Cretaceous periods, but dinosaur fur-eating insects have not been previously reported. The discovery of this ancient feather-eating beetle is of great significance, because it has pushed the history of feather-eating insects to 55 million years, because before the discovery of this beetle, the earliest feather-eating insect. is known to mankind in the Kainozoic era 44 million years ago. Thus, the discovery of Mesophthirus engeli filled the gap in the early evolution of a feather-eating insect. Mesophthirus engeli lived in the Cretaceous period 100 million years ago, this is also an important period of diversity and differentiation of primitive birds and feathered dinosaurs, it can be said that this is also the setting stage. parasitic relationship between feathering insects and their host.