[Home]History of Permian

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Revision 10 . . (edit) December 7, 2001 2:14 pm by KamikazeArchon [*removed /talk... i realized my comment was unnecessary]
Revision 9 . . (edit) December 7, 2001 2:12 pm by KamikazeArchon [*Added /talk]
Revision 8 . . December 7, 2001 2:10 pm by Wmorrow [*meteorite. A meteor is a flash of light. A meteorite causes it.]
Revision 7 . . (edit) October 19, 2001 7:18 am by Don Kenney [*fix spelling error]
  

Difference (from prior major revision) (minor diff, author diff)

Changed: 15c15
Sea levels in the Permian were low and near shore environments were limited by the collection of almost all major landmasses into a single continent -- Pangea?. One continent -- even a large continent -- has less shoreline than six to eight smaller ones. The Permian ended with the most extensive extinction event recorded in paleontology. 90%-95% of marine species became extinct. There is very modest evidence that the extinction was caused by weather changes due to impact by a large meteor. Land life in the Permian included diverse plants, large amphibians and large reptiles including the ancestors of the dinosaurs. The first modern trees -- conifers -- appeared in the Permian. Permian marine deposits are rich in mollusks, echinoderms and brachiopods. The last trilobites died out before the end of the Permian.
Sea levels in the Permian were low and near shore environments were limited by the collection of almost all major landmasses into a single continent -- Pangea?. One continent -- even a large continent -- has less shoreline than six to eight smaller ones. The Permian ended with the most extensive extinction event recorded in paleontology. 90%-95% of marine species became extinct. There is very modest evidence that the extinction was caused by weather changes due to impact by a large meteorite. Land life in the Permian included diverse plants, large amphibians and large reptiles including the ancestors of the dinosaurs. The first modern trees -- conifers -- appeared in the Permian. Permian marine deposits are rich in mollusks, echinoderms and brachiopods. The last trilobites died out before the end of the Permian.

Changed: 17c17
During the Permian, all the Earth's major land masses except portions of East Asia were collected into a single landmass known as Pangea?. Pangea? straddled the equator. Deserts seem to have been widespread in Pangea?.
During the Permian, all the Earth's major land masses except portions of East Asia were collected into a single landmass known as Pangea?. Pangea? straddled the equator. Deserts seem to have been widespread in Pangea?.

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