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the plants started to change and the herbavores started to die so the carnivivors had to kill each other and went almost extinct and then a meteorite shower finished them off.
June Douglas
Wiki User
∙ 13y agoAt the time of the Permian mass extinction, the Siberian Traps were forming. The Siberian Traps were a huge, long term volcanic eruption lasting about one million years, and poured out enough lava to cover 7 million square kilometers nearly half a kilometer deep.
This eruption is presumed to have released enough carbon dioxide gas to raise Earth's temperature by 5 degrees Celsius (9 degrees Fahrenheit). This would have been enough to evaporate many liquid methane deposits under the ocean floor. Methane is an even more powerful greenhouse gas than carbon dioxide, and so even in smaller amounts it would have been able to raise the global temperature an additional 5 degrees Celsius.
This means that the new average temperature would be 10 degrees Celsius (18 degrees Fahrenheit) warmer than before. The Earth would have suffered a desert-like climate.
This heating could have disrupted the thermohaline circulation in the oceans, which would have reduced the amount of oxygen being dissolved in the oceans. Not only would this lack of oxygen kill many sea animals, but it dramatically increased the populations of certain kinds of anaerobic bacteria (anaerobic bacteria are those that do not need, and in fact are usually killed by oxygen). These bacteria would have produced so much hydrogen sulfide gas that many plants and animals would have been poisoned. Then this gas would have damaged the ozone layer, and that would have allowed very damaging amounts of UV light to enter, killing even more species.
However, this theory appears to have some weaknesses, so scientists are not yet certain of what caused this tremendous mass extinction.
Wiki User
∙ 9y agoExtinction occurs when, as a result of some environmental change or catastrophe, a species is no longer able to survive in its environment. In a mass extinction, a significant percentage of species worldwide go extinct at the same time, as the result of a global catastrophe or change in the environment.
Most often these global catastrophes manifest as a drastic change in weather patterns, which cause many or most existing species to go extinct. An example is the Permian-Triassic extinction event, in which about 90% of species are estimated to have died out. The cause is believed to have been the Siberian Traps, a large area of constant volcanic eruptions in what is now Russia that released enough greenhouse gases to raise Earth's global temperature and release stored methane in the ocean floor, further raising Earth's temperature. The total temperature change was only about 10 degrees Fahrenheit, or 5.5 degrees Celsius, but it was enough to cause the worst known mass extinction in Earth's history. As continents moved, they also caused changes in climate at times, resulting in more minor mass extinctions, and a very large asteroid impact caused at least one major mass extinction event.
Wiki User
∙ 11y agoWho cares it really does not matter what event happened. read the book
Wiki User
∙ 10y agodescribe the evidence suggesting that impact caue the mass extinction that klled off the dinosours
Wiki User
∙ 9y agoFrequent volcanic eruptions
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What does the end of the paleozoic and the mesozoic have in common?
Mass extinction
What event happened at the end of the Paleozoic era?
A large mass extinction took place at the end
How did the changing geologic condition of the Paleozoic age affect the evolution of animals and plants?
The changing geologic condition of the Paleozoic age affected the evolution of animals by leading to the development of land based vertebrates and vascular plants. The largest mass extinction in our planets history happen at the end of the Paleozoic Era.
Why did many planets die at the end of the mesozoic?
Scientists believe the Cretaceous-Paleogene extinction event, or the plants dying at the end of the Mesozoic Era, was caused by a massive asteroid/comet impact. The theory suggests that the impact had catastrophic effects on the environment, including an impact winter, which prevented the plants from carrying out photosynthesis.
What was the first era in geological time?
The Paleozoic Era was the second in geological time. It was between 541 to 251 million years ago. Phyla, fish, arthropods reptiles and amphibians all evolved during the Paleozoic era. The end of the Paleozoic period ended with the largest mass extinction in history.
What event marks the end of both the Paleozoic Era and Mesozoic Era?
The Permian-Triassic (P-Tr) Extinction Event is widely recognised as the greatest extinction event on Earth. It is also known as the "Great Dieing".It occurred 251 million years ago marking the end of the Permian Period and the start of the Triassic Period.It also marks the end of the Paleozoic Era and the start of the Mesozoic Era. Estimates have suggested that 96% of marine species and 70% percent of land vertebrate species became extinct. It is also the only known mass extinction of insect with 56% of insect families and 83% of insect genera becoming extinct.Little is known of the cause of the mass extinction but theories range from meteorite impacts, to volcanism, to sea level fluctuations.
What event do scientist think may have caused the mass extinction at the end of the Paleozoic?
the climate change during the shifting of the plates that was causing the making of Pangea
What percent of earths species died off at the end of the paleozoic era?
Statistical analysis of the fossil record indicates somewhere around 35% of all species disappeared at the end of the cretaceous. (There is considerable margin for error in that figure--we don't have a good estimate for the number of species that exist today, even). http://en.wikipedia.org/wiki/Cretaceous%E2%80%93Tertiary_extinction_event
What era had 95 percent of species die out?
The worst known mass extinction in Earth's history was the Permian-Triassic Extinction Event at the end of the Permian period. The Permian period was the last period of the Paleozoic Era.
What major event event occurred at the end of the Paleozoic era?
The Permian-Triassic Extinction Event happened at the end of the Paleozoic Era. It is widely recognised as the greatest extinction in Earths history. It was also known as the "Great Dying". 90% of all marine species, 60% of all land vertebrates and 58% of all genera of insects became extinct. It is the only known mass extinction of insects.
When was The largest mass extinction of the Paleozoic Era?
The Paleozoic Era spans six geologic time periods. The first was Cambrian and is the name given to a period of time in Earth's history, which spanned 570-510 million years ago. The Permian Period, which was the last period covers the time roughly 286 million years ago.
What signaled the end of the Paleozoic Era?
The Permian- Triassic extinction event was the greatest extinction on Earth. 95% of all organisms died during this time period, signaling the beginning of the Triassic.
