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Re: extinction

Two were bigger than the end-Cretaceous extinction (which ended the non-avian dinosaurs):

1. the biggest is the end-Permian
2. second biggest is end-Triassic (which wiped out most of the crurotarsan archosaurs, enabling the dinos to diversify)

>>I dont mean that which kill dinosaurs, i mean that extinction what was biger than dinosaurs.
was it in late triassic?<< 

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Emma C. Rainforth
Geosciences Rm. 206E
Lamont-Doherty Earth Observatory
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emmar@ldeo.columbia.edu
http://www.ldeo.columbia.edu/~emmar/research/indexr.html