What happened at the end of the Paleozoic and how did this event effect the biosphere?
Warning: constant() [function.constant]: Couldn't find constant TT_TH8US_LEN in /home/gaia/public_html/wp-content/plugins/tweet-this/tweet-this.php on line 1821
Warning: constant() [function.constant]: Couldn't find constant TT_TH8US_LEN in /home/gaia/public_html/wp-content/plugins/tweet-this/tweet-this.php on line 1821
Warning: constant() [function.constant]: Couldn't find constant TT_TH8US_LEN in /home/gaia/public_html/wp-content/plugins/tweet-this/tweet-this.php on line 1821
Warning: constant() [function.constant]: Couldn't find constant TT_TH8US_LEN in /home/gaia/public_html/wp-content/plugins/tweet-this/tweet-this.php on line 1821
Warning: constant() [function.constant]: Couldn't find constant TT_TH8US_LEN in /home/gaia/public_html/wp-content/plugins/tweet-this/tweet-this.php on line 1821

At the end of the Permian Period, which was also the end of the Paleozoic Era, the Permain Extinction wiped out 90% of life on the Earth. The effect on the biosphere was to allow the dinosaurs to become the dominant species on the Earth during the Mesozoic Era.