years ago the Permian period came to an end in a mass extinction causing 95% of species living in the ocean to die (Cort, 2006). To paint a picture of the Permian into your mind, forget all you learned in grade 8 geography class; all the continents we know today were stuck together, forming a supercontinent called Pangaea. This is a time after the Carboniferous period, a period…
Amphibians were growing in size and diversity, the species resembled modern day crocodiles. The climate at the time was humid and hot and had a vast amount of plant life. The sixth and final period was the Permian Period during this period there was the biggest mast extinction to ever come. The climate went through extreme conditions. The supercontinent of Pangea had extreme cold weather the south was cold and dry, and the majority of the area was covered in ice caps. The northern area dealt…
The Permian Mass Extinction Introduction There are five major extinctions in history: the Late Devonian, the Ordovician-Silurian, the Permian-Triassic, the Triassic-Jurassic, and the Cretaceous-Tertiary. Known as the Big Five, these extinctions exceeded all others in size and destruction, each killing more than 60% of species from that period. Each one acted as a bottleneck, allowing the survival of only a fraction of the organisms that had been thriving before, from which evolution and life…
climate does change, it is almost always in relation to the amount of carbon dioxide in the atmosphere. According to Howard Lee, a geologist who writes for a website called skeptical science, stated that the earth 's climate has abruptly risen in the past, as it is doing today. He also says that these abrupt rises in earths climate has always been destructive for life on earth, causing mass extinction. The Permian period is an example of this. The Permian period is also known as…
This event is known as the Permian Triassic Mass Extinction or also called by many the Great Dying. This mass extinction is known as the worst extinction comparing them to the Ordovician, Devonian and the Cretaceous Extinction. Some individuals are not award that the Permian –Triassic are two forming boundary between the end of the Permian and the beginning of the Triassic period. The Permian-Triassic Extinction almost killed the whole Earth. Since this extinction took place so long ago it had…
The Permian Period The Permian Period is the last one, after the Carboniferous Period, of the Paleozoic Era lasting for about 46 to 47 million years from 299-252 million years ago (mya) (Smith 2011). One major feature of this period is the formation of the supercontinent, Pangaea which affected the environment and the climate as well which gave rise to new species. Another distinct feature is the greatest mass extinction event which killed around 54% of all marine families and most of the…
INTRODUCTION The Permian-Triassic extinction is seen as one of the largest mass extinction in the history of life. According to the McGraw-Hill Dictionary (2003) it can be defined as a mass extinction event marking the division between the Permian Period and the Triassic Period as well as the border between the Palaeozoic and Mesozoic eras. It is estimated to have triggered the extinction of 90% or more of all ocean species, approximately 70% of land vertebrates, and significant extinctions of…
about the geologic evidence of the permian triassic extinction. This is a volcanic scenario. There are different geologic reasons for the permian triassic i'm going to tell you about them . During this period there has been documented changes in the air. The atmosphere went evey high which means high levels oxygen was about 30%. When it was low it was about 15%. In this time the salinity in the sea was filled with sharply during the period about 250 million years ago when it was the end…
of the Mesozoic era, following the Permian and preceding the Jurassic period. Both the beginning and ending period of the Triassic are marked by major extinction events. During the Triassic Period, nearly all of the Earth land masses was focused into a single supercontinent positioned more or less on the equator; began to split but had not yet detached. The Triassic climate was generally hot and dry, establishing typical evaporites and red bed sandstones. The Polar Regions was humid and…
High School Football. "Those lights become an addiction if you live in a place like Odessa, the Friday Night fix." (Bissinger,14) Racism, controversy, and pride. Permian High School in the west Texas oil town of Odessa, Texas. Small town, deep South, USA. Author H. G. "Buzz" Bissinger's brilliant study of the 1988 football team set in this beautiful Texas town grew into a socially motivated novel entitled Friday Night Lights. While researching small town Texas football for his novel Friday…