New evidence! Where dinosaurs disappeared?

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Where dinosaurs disappeared?

The Earth’s masters in the past. They were the undisputed masters of our planet for 150 million years, and it seemed that such a state would remain forever. And then they suddenly disappeared, as if they had never been. Behind them were only fossils and an eternal question – Why were they extinct? There are many theories that attempt to explain this mystery of the disappearance of dinosaurs and their similar creatures from prehistoric Earth’s surface about 65 million years ago. Here we will try to present some of the most recognized theorems, but these theories can not be accepted as irreplaceable and definite scientific truths.




CLIMATE CHANGES

During the Mesozoic era, climate that prevailed around the world ranging from the tropical to the temperate tople.Era Cenozoic, which reaches its peak in this age in which we live, was marked by an increasingly more pronounced climate change (this is not only nature stepped in his fingers, but And humans), with the formation of polar caps in final phases and strongly advanced climatic zones from poles to equator. Perhaps the dinosaurs simply were not able to adapt to these changes?
However, all of these changes did not just happen. Based on fossil findings, it is difficult to conclude that there were large climatic differences between the period of the late Cretaceous and the Cenozoic. Dinosaurs lived in the forests and savannas that were held and later, in the age of mammals, and can not be seen any drastic changes that would cause the extinction of the dinosaurs. In addition, the crocodiles, which are valid for close relatives of the dinodaurus, have experienced the era of kenosoiology and become the companions of people in today’s world.
Assumptions which are very attractive for a broad lay public about dinosaurs fighting for its last breath under incredible heat waves, freezing or exposed to the blistering cold, do not have confirmation of the available evidence. Here, they must have been, however, a lot more subtle than the above. One possibility is that climate change, whether hot or cold, influences the reproductive cycles of dinosaurs and thus leads to their extinction. But the testimony of fossil plants do not indicate that occurred some as extreme climate change that would have disastrous consequences for the extinction of dinosaurs, both large and the smallest ones. Here again crocodiles come up who have managed to survive all this.
One of the great mysteries of the disappearance of the dinosaur is that it played in strictly zoological frameworks. All dinosaurs are extinct, a special emphasis on everyone, which means they are the largest and the smallest ones that were the size of the crocodile. Why some dinosaurs, especially those smaller, did not survive. If the crocodiles could, why were not the dinosaurs that were their size? Although the extinction of the dinosaurs was followed by extinction and other Mesozoic reptiles such as pterosaurs, the marine ihtiosauri, plesiosaurs, mazosauri, flying pterodactyls, various other reptiles such as turtles, lizards and snakes, passed without problems the line that divides the Mesozoic from Cenozoic.
So today any theory that tries to explain the extinction of dinosaurs must also explain the non-extinction of the reptiles that today live on Earth.

 








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