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Theories behind extinction of the dinosaur
Theories behind extinction of the dinosaur
Theories behind extinction of the dinosaur
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A number of different theories have been assessed throughout the course of this research to attempt to reach a conclusion as to the reason behind the extinction of the Tyrannosaurus Rex. Although all arguments are credible, and supportive with educated information and data, the most conclusive theory of all is The Alvarez Asteroid Impact theory.
Alvarez, a researcher at the University of California, discovered a pencil thin layer of Iridium around the rocks in Gubbio, Italy. (New Scientist, 1) Iridium is an element found in meteorites and asteroids. In 1980 it was proven that the layer if Iridium was evidence of a huge comet or meteorite that crashed into the earth sixty five million years ago. The normal amount of Iridium an area is to have is 0.001 on an average. The layer of Iridium found in Gubbio Italy was 0.003. Thirty times the average amount in parts per million. (New Scientist, 1) The theory of the Alvarez Asteroid states that the strength of this comet is at 10,000 times the explosive power of the global nuclear arsenal. The Alvarez Asteroid theory is the leading explanation as to why the amazing dinosaur creatures died millions of years ago, along with many other animals of the Earth's Crustaceous Period.
The extinction of the Tyrannosaurus Rex was obviously due to the same reason. Every other living species was killed sixty five million years ago. Although it is believed that the asteroid theory is the cause of extinction of the Crustaceous Period, we cannot be positive. The environmental effects of this problem were that the dinosaurs living during this period perished from the earth and their extinction remains a mystery to us to this day. All we can do to reenact what happened is use the technology we have in the twenty first century to find more evidence to see what went wrong so long ago. By discovering things like what happened to the Tyrannosaurus Rex we can use this information to prevent an event such as a mass extinction from happening a second time.
Although it is impossible to rewrite history, we still have to be careful to prevent a catastrophe like the asteroid said to have hit the earth sixty five million years ago. If there is ever a scare of an asteroid as big as the Alvarez Asteroid, one way of preventin...
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...d at least seven tons and were over forty feet long. The T-Rex was the largest meat-eating dinosaur. The teeth of the T-Rex are thick and sharp for the killing of its prey. The T-Rex was also very fast; in fact it could outrun any species of dinosaur if it was hungry enough. Scientists have also found that the Tyrannosaurus was also very smart, it would outwit any prey if it needed a snack, even the Gigantosaurus the only dinosaur that is bigger than the T-Rex wasn't smarter than the king. (Highlights, 22)
The Tyrannosaurus Rex was a very smart and interesting dinosaur and it is unfortunate that we will never be able to see one. The extinction of dinosaurs was brought on by the Alvarez Theory. It is great to know what actually happened to them now, and also know how to prevent such an occurrence from happening again. If our country uses the technology it has available it will be possible to find out more about the mass extinction of the Crustaceous Period. As the years pass technology becomes more advanced and we will eventually know everything there is to know about what happened sixty five million years ago.
The possibility if a meteor strike as the cause of extinctions is discarded, something that most specialists agree on. There is no evidence of any meteor crater big enough or recent enough to be accountable for it; there are no “elements that are common extraterrestrially but less so on Earth, such as iridium, and no sign of a tsunami or other phenomena following the impact.” The extinctions where also very selective and occurred over a very long period of time. If a “one shot” catastrophe had been the cause it would have affected all species at the same time and in similar
The idea of cloning dinosaurs and other prehistoric life became popularized by the 1992 film Jurassic Park (based on Michael Crichton’s 1990 novel). Though it may have sparked new interest into the field of paleontology, it did so with deceiving inaccuracies. However, the technical fallacies of the actual dinosaurs are somewhat forgivable as it added to the film’s dramatic appeal. Velociraptor, as depicted in the film, was about the size of a grown man. In reality, velociraptor came to about the kneecap. Furthermore, velociraptor would more likely have been covered in feathers rather than the lizard-like skin portrayed in the movie. One scene shows velociraptor fogging the window of a door. This is an endothermic or warm blooded trait as it implies the dromaeosaurid’s body temperature is above the temperature of his environment. There is also no evidence of dilophosaurus bearing a neck frill, and brachiosaurus did not have the ability to chew his food in a circular motion (iguanodon was the first dinosaur to develop this technique by acquiring back molars to allow for equine or bovine-like chewing). Fortunately, tyrannosaurus remained very close to his biological authenticity, with the only paleobiological errors stemming from a lack in computer animation such as rudimentary ball and joint programs. However, the erroneous nature of the deoxyribonucle...
However, there are still many factors in the evidence collecting process that make it difficult to determine the actual events, let alone the sequence of them. For instance, at the end of the Permian, giant volcanic eruptions occurred in Siberia, spewing out some 2 million km3 of basalt lava, and covering 1.6 million km2 of eastern Russia to a depth of 400-3000mteres, equivalent to the area of the European Community. Consequently, with increasingly precise dating, the Siberian “Trap” (areas which are composed of basalt, a dark-colored igneous rock which is generally not erupted explosively from classic conical volcanoes, but usually emerges more slowly from the long fissures in the ground) have switched from having only a minor role in the Permian crisis to being the most probable cause of the whole catastrophe. Some scientists have even suggested recently that the massive flood basalts were actually themselves caused by a giant extraterrestrial impact, which tore deep into the continental crust of that part of present-day Siberia. So this is yet another example the evolutionary and
What they did find was fluctuations in the model dating back 65 million years ago right when the asteroid supposedly hit. Even though it sounds like good solid evidence a lot of scientists are still not sold on the idea and need more convincing.
We use dinosaurs to represent the changes in nature that have occurred throughout time. Studies found that although the “oldest rock did not show evidence of life, the progression of plant and animal life that changed in recognizable intervals, from ancient life, age of reptiles to the age of mammals” (Dino Nature Metaphor, slide 6), measured the age of the earth. When we think of dinosaurs in relation to nature, we think of that very powerful force that controls the cycle of life. Nature was able to yield such magnificent ferocious creatures that walked the earth and then take them back when they served nature’s purpose. Dinosaurs fit perfectly in nature’s constant
It is also a continuing theory that perhaps an asteroid crashed into earth which caused a climatic and environmental changes causing dinosaurs are extinct. The asteroid is trusted to have made a huge depression in Mexico's Yucatan Peninsula. Asteroids are categorized into a number of types according to their spectra. C-type, includes more than seven five percent of known asteroids: tremendously dark; similar to carbonaceous chondrite meteorites; approximately the same chemical arrangement as the Sun minus hydrogen, helium and other volatiles; S-type, seventeen percent: relatively bright; metallic nickel-iron assorted with iron- and magnesium-silicates; M-type, most of the rest: bright; pure nickel-iron. There are also a dozen or so additional rare types.
The K-T Extinction is supported by 3 pieces of evidence. According to the EarthViewer app, the crater caused by the impact of the 10 km-diameter asteroid was identified in the Yucatán Peninsula of Mexico. This evidence proves the K-T extinction because there it is physical evidence that exists from the mass extinction event. Additionally, "Fossil Data by Era and Period" shows that during the Cretaceous period, there was evidence of a diversity of dinosaurs from the fossils. However, during the Tertiary period, there was no evidence of dinosaurs, seemingly nonexistent. This is another piece of evidence because the K-T extinction happened at the end of the Cretaceous period and the beginning of the Tertiary period. The Tertiary period wouldn't
In the early 2000’s, Universal released the ending of the Jurassic Park trilogy, Jurassic Park III. The Tyrannosauruses rex, commonly known as T-rex, played the main antagonist in earlier movies, but was changed to the long, aggressive Spinosaurus for the final installment. This bipedal carrier of terror quickly killed the almighty T-rex and dominated the rest of the movie. Later in Jurassic World, Colin Trevorrow, the director, references
Until recently, scientists believed the chances of finding a fossilized dinosaur heart were extremely slim. The heart belonged to a 66 million year old dinosaur found in Harding County in Northwestern South Dakota. The dinosaur, found in 1993, weighed over 650 pounds and was 13 feet long. The dinosaur was in fairly good condition with the exception of the left side of the skeleton. The small, plant-eating Thescelosaurus, nicknamed ‘Willo’ has been acquired by the North Carolina Museum of Natural Sciences. Thescelosaurus was an ornithischian, or "bird-hipped," dinosaur that lived in the latter stage of the Cretaceous period. This was approximately 1 million years before the end of the dinosaur era. Native to North America, its range extended from the northern United States up into Canada. Since using the 3-D software to reveal Willo's heart, scientists have also used it to create 3-D images of the fossil's skull, and of remains from other dinosaurs in the museum's collection. (Fisher, Paul)
While this film may seem out of the ordinary, it is becoming more relatable as new creations are made. Looking back at this film in 2000 after it was released, this idea of bring back dinosaurs seemed outrageous. The film as several scenes that seem very unrealistic today, but when we consider the future, these ideas may not be as outrageous as we thought. TO being, there is a scene in the film where a man named Owen is bonded with a discourse. According to the Washington Post, “Our hero Owen (played by Chris Pratt) spends the first half of the movie serving up foreshadowing on a platter. People can’t control wild animals, he explains again and again. Even as an accomplished velociraptor-whisperer, he could have been torn to pieces by the dinos who found him unexpectedly trapped in their enclosure, setting off
The disaster theory, Gould claims, is an example of good science. It has testable evidence and has an impact on studies in other fields of science, it develops further and explains why the extinction of dinosaurs occurred simultaneously with other events. This theory suggests that a large comet hit the Earth sixty five million years ago, causing the cloud of dust to rise into the sky and to block sunlight. As a result, world temperatures went down significantly, the ice age bega...
Knapp, Alex. "Asteroid Impact Was The Coup De Grace For Dinosaurs." Forbes.Com (2013): 2. Business Source Premier. Web. 13 Jan. 2014.
...pdated 1995, accessed 3 Sept. 2000), Dino Buzz – What killed The Dinosaurs ? – Current Arguments,
Scientists do not know for sure if the Argentinosaurus is the biggest dinosaur, but it is renowned for its size. Argentinosaurus was discovered next to the remains of the Gigantosaurus. The Argentinosaurus was one of the biggest herbivores. It was as long as three school buses end to end. It was also able to gain 100 pounds a day, making it able to gain a ton in only 22 short days.
seems like it happened so sudden, as geologic time goes, that almost all the dinosaurs