Today in the United States, North Dakota Tanis excavation site has a surprising discovery, the head of this excavation de Parma said that the excavation of a dinosaur fossil, this dinosaur fossil and the past is different, according to the scene judgment of this dinosaur remains, is 66 million years ago asteroid hit the earth, a dinosaur unfortunately hit by asteroid fragments.
New evidence of dinosaur extinction
De Palmar told the news to the British BBC reporter, Tanis excavation site has a lot of preserved evidence, such as the discovery of rock pillars, dinosaur fossils, etc., although this is only a dinosaur remains, but the dinosaur's leg fossils are very well preserved, it is likely that meteorite fragments hit the dinosaur, the dinosaur's legs were lucky to be preserved.
Of course, dinosaur leg fossils alone do not explain anything, in the Tanis excavation site, researchers also found other evidence, such as turtle fossils, small mammals, Triceratops skin, pterosaur embryo fossils, etc., and even found fragments of asteroids, through a variety of collected evidence, you can further restore what happened 66 million years ago.
An impact point 66 million years ago
The Yucatan asteroid impact site is one of the most important evidence of the catastrophe 66 million years ago, indicating that an asteroid impact on Earth really occurred at that time, and the remains of these discoveries have also been linked to the Yucatan impact site, where scientists emitted some material from the resin of the local trees, most likely from the universe.
Then let's look at this mutilated dinosaur fossil, the British Natural History Museum Professor Barrett analyzed that this dinosaur leg fossil is a scaly dinosaur, from the dinosaur leg cut-off, the wound was quickly torn off, and there is a high probability that the dinosaur was also killed at that time.
If the specific time of death of the dinosaur can be determined, it can further prove that the cause of the extinction of the dinosaurs is the asteroid hitting the earth, of course, this view has been recognized by most people, and the evidence found this time is more confirmed by this!
Asteroid impacts on Earth are the cause
As the overlord of an era on Earth, the extinction of dinosaurs has always been a mystery, and the asteroid impact on the earth has great destructive power, but it is only limited to the impact point.
The distribution area of dinosaurs 66 million years ago was very extensive, and it was not an asteroid that directly killed dinosaurs, only some dinosaurs died because of the direct impact of the asteroid, and most of the dinosaurs died because of the environmental changes caused by the asteroid impact on the earth.
One of the biggest changes is the temperature of the earth, the asteroid impact on the earth caused the earth volcanic eruption, a large amount of volcanic dust floated into the atmosphere, thick volcanic ash obscured the sunlight, resulting in a rapid decrease in the earth's temperature, combustion also let oxygen be consumed in large quantities, oxygen-rich environment rapidly changed, temperature and air drastic changes are the biggest cause of the extinction of the dinosaurs.
Both direct and indirect evidence found at the Tanis excavation site suggests that the asteroid impact event 66 million years ago really existed, but some of the evidence needs to be further verified before we can truly understand what really happened to the catastrophe!