https://padlet.com/christophercasey2/zsoaduosa5dun52p en-us 2023-05-17 18:42:00 UTC 2025-10-03 20:26:18 UTC hello@padlet.com christophercasey2 https://padlet.com/christophercasey2/zsoaduosa5dun52p/wish/2595155652 it happened around 201 to 252 million years ago i was the death of 76% of all marine life and terrestrial species it was the key moment that lat the dinosuors dominait the land]]> 2023-05-17 18:53:34 UTC https://padlet.com/christophercasey2/zsoaduosa5dun52p/wish/2595155652 christophercasey2 https://padlet.com/christophercasey2/zsoaduosa5dun52p/wish/2595160358 it happened about 445.2 million to 443.8 million years ago it was the death 85% of the Ordovician species it was twice as severe as the extiction that wiped out the dinosours]]> 2023-05-17 18:58:07 UTC https://padlet.com/christophercasey2/zsoaduosa5dun52p/wish/2595160358 christophercasey2 https://padlet.com/christophercasey2/zsoaduosa5dun52p/wish/2595161755  K–T extinction event that occurred at the end of the Cretaceous Period, about 66 million years ago, which is famous for bringing an end to the dinosaurs.]]> 2023-05-17 18:59:28 UTC https://padlet.com/christophercasey2/zsoaduosa5dun52p/wish/2595161755 christophercasey2 https://padlet.com/christophercasey2/zsoaduosa5dun52p/wish/2595168176 the Devonian Extinction was a series of  Extinction that caused  70% to 80% it involved Lower Zilchov, Taghanic, Kellwasser, and Hangenberg events about 419.2 million to 359 million years ago]]> 2023-05-17 19:05:08 UTC https://padlet.com/christophercasey2/zsoaduosa5dun52p/wish/2595168176 christophercasey2 https://padlet.com/christophercasey2/zsoaduosa5dun52p/wish/2595174369 it was  2.4 million years ago and lasted until 11,500 years ago earths climate would allternate between greenhouse periods or ice ages during the ice ages the polar sheets whould expand same with glaciors ]]> 2023-05-17 19:11:22 UTC https://padlet.com/christophercasey2/zsoaduosa5dun52p/wish/2595174369