Theories of the Extinctions of the Dionsaurs: Dinosaurs became extincted 65 million years ago, at the end of the Cretaceous period, something so devastating that it altered the course of life on earth. It seems like it happened so sudden, as geologic time goes, that almost all the dinosaurs living on earth disappeared. So how did these dominant creatures just die off? Was it a slow extinction, or did it happen all of the sudden? These questions bring rise to many different
Extinction of Dinosaurs Two-hundred and thirty million years ago the first dinosaur-like creature roamed the earth. Within five million years it could be considered a dinosaur. They were soon at the top of the food chain. They populated every continent. Then 65 million years ago they vanished. The most powerful creatures ever to live on earth had become extinct. Dinosaurs were not the only victims of this "mass extinction." There were many other species that were killed off. During what
years ago, the dinosaurs went extinct. Scientists believe that this was caused by an asteroid colliding with Earth. One major piece of evidence for this is a giant crater (150 km wide) that lies just off the Yucatan Peninsula, which could have been caused by the collision. There were high amounts of Iridium (a metal that is very rare on Earth’s surface but more common in asteroids) and fractured crystals found near the crater. Therefore, an asteroid impact caused the dinosaur extinction. According
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
The extinction of dinosaurs is an interesting issue. “There once was a time when people didn’t know anything about dinosaurs. In fact, there wasn’t even the world “dinosaur” until 1842” (Dr. R. Holtz, JR, 2007, P.6). Although dinosaurs died more than 60 million years ago, paleontologists have not yet discovered the reasons of their extinction. There are many types and sizes of dinosaurs. There are gigantic types, which are the common types, and small-sized dinosaurs. Ironically, dinosaurs mean
Hypotheses on the Extinction of Dinosaurs In the early nineteen hundreds, dinosaur fossils were discovered and recognized around the globe. Greedy scientists and civilians, searching for their own prize skeleton, rushed to rip bones out of the ground, destroying the fossils as they went. It was not until later in the century that scientists and paleontologists began pondering how such widespread creatures disappeared. Currently, paleontologists debate the two main hypotheses of how the classic
Extinction of Dinosaurs Many different theories exist as to why the dinosaurs went extinct. We know for sure most dinosaurs died out around 65 million years ago. The majority of scientists agree on a number of theories as to what brought the end of the dinosaurs. The most popular theory is that an asteroid ended the reign of the dinosaurs. Another theory, massive climate change in the pre-historic atmosphere, caused all the dinosaurs to die. Some scientists believe that mammals out competed dinosaurs
Theories on Dinosaur Extinction What killed the dinosaurs? Several theories have been brought up over time to answer this question. It has been of vast interest to many scientists how creatures the size of the dinosaurs could have been wiped out of existence. Proposed Theories Climate Change Theory Some scientists propose that climate change was killing the dinosaurs before the famous asteroid struck. Fossil evidence shows that the average temperature had dropped from 25 degrees Celsius
started this paper, I had many questions. I wanted to know what all the main theories of dinosaur extinction are and how many there are. I also wanted to know what factors in each theory would have killed these massive beasts. Other questions I had are: had dinosaurs been dying out before the event? Did any dinosaurs survive the Cretaceous/Tertiary (K/T) event? What religious beliefs contradict the dinosaurs’ very existence? The last question I wanted to address was whether or not an event such
The Dinosaur Extinction It has been only a few million years since human existence started on this planet, these few million years are considered very less when compared with the planet earth’s existence. Many creatures walked this planet and dominated other species before evolution of human beings. One such species were the dinosaurs, dinosaurs have been the center of human interest since the day their fossils were discovered by the zoologists. Many experiments and researches were conducted and
The prominent theory is that dinosaurs died in a fiery death due to an asteroid crash on Earth, but is that really what caused their mass extinction? Every scientist has a theory, and with so many out there it was hard to just pick one, they all made sense. It is completely possible for a volcano to have killed the dinosaurs, or even an asteroid. Another popular theory was the ice age. These were all plausible reasons for the extinction of dinosaurs, and that’s when the combination theory was discovered
Scientists are still unbeknownst as to why exactly these dinosaurs - strong, unstoppable, and ginormous - met their end (SC10). Dinosaurs ruled the Earth during the Triassic, Jurassic, and Cretaceous periods (Bauer). This makes it difficult to fully understand how the dinosaurs did not survive extinction, but many scientists gravitate towards two hypotheses that disclose the annihilation of the dinosaurs. The first theory that paleontologists favor discussing is the theory that a celestial body
Dene’ Science/English 7B 23 April 2018 Why did the Dinosaurs Go Extinct? What is extinction? Dinosaurs are the largest species to be extinct. There are many different theories of how the dinosaurs went extinct. Some of those theories are an asteroid hit earth causing massive amounts of iridium to fill the air, climate change very intense causing them to go extinct, mosquitos that contain malaria could have forced the dinosaurs into extinction, and a volcano could have erupted causing iridium to
Dinosaur Extinction How would the Earth be like if dinosaurs still lived to this day and never got extinct? Sixty-five million years ago dinosaurs ruled the Earth. Earth was beautiful with nature and animals. One day an asteroid crashed on Earth an the dinosaurs and some of the animals went extinct. Many people believe in different theories, but nobody really knows what really happened to the dinosaur extinction. There are many theories but the strongest one is the theory about the asteroid crashing
So what killed the dinosaurs? Without having any background education in science it is hard for the general public to comprehend such matters and they rely on the knowledge of the scientists in this field. Although there has been much research on the subject nobody has come up with a conclusive answer. And we are left to read the countless articles, all having their own opinions as to the mass extinction. One such theory is that a shift in the solar system could have caused the mass destruction.
The Role of Fungus in the Extinction of Dinosaurs The debate over what ultimately killed off the dinosaurs is an area of great interest to not only scientists, but everyone. The dominant thought seems to be that an asteroid struck the earth at the end of the Cretaceous period and killed off much of the fauna and flora inhabiting the earth. However, the sequence of events following that mass extinction has been fairly blurry until a recent discovery, published in a recent issue of Science, by
Theories about the extinction of dinosaurs One thing is for sure, dinosaurs don’t exist any longer. Now the question is, what happened to them? Did they all die? Did they all leave earth? Many theories have been put forward to explain the disappearance of this magnificent creatures. Some of the various theories proposed include; The big bang theory The big bang theory argues that the cause of the extinction of dinosaurs was as a result of an asteroid from space that crashed into earth some 66 million
fascinating because mysteries are like taking unknown information, discovering it, and making it known. Discovering why dinosaurs went extinct is looking into the discovery of their extinction and why they are extinct. Dinosaurs were the largest reptiles known to man, and around 65 million years ago, dinosaurs became extinct. Two-hundred and thirty million years ago the first dinosaur-like creature roamed the earth. These creatures were the top of the food chain, and it is crazy to think that the most
The Extinction of Dinosaurs In the essay “Sex, Drugs, Disasters, and the Extinction of Dinosaurs” scientists come up with several theories of how the dinosaurs could have possibly become extinct. They tell three of the leading theories as to how they think the dinosaur era extinction happens. The whole thing is a big conspiracy. These theories are government cover-ups to keep us from knowing things. The government knows things that they don’t want us to know, but I already know what happened. The
Extinction of Dinosaurs due to Asteroid Impact Nobody knows for sure exactly how the dinosaurs became extinct. However scientists have speculated for decades about possible events that caused the dinosaurs to die out. Possibilities range from asteroids, to volcanoes, to climate changes. One of the more popular or well-known extinction theories involves the belief that an asteroid struck the Earth, causing devastating effects, and triggering mass extinctions around the end of the Cretaceous