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Re: Were the dinosaurs fried by ultraviolet light?

Caitlin R. Kiernan said:

>Which makes me think, as so many things often do, about the frogs. Being 
>extremely sensitive to UV radiation, and enviromental stresses in general, 
>why were they spared if the biosphere was suddenly bombarded with twice the 
>normal levels of UV rad.?

Is there enough of a fossil record of K/T frogs to tell if thee sailed
through boundary unscathed?  When folks start pointing out this or that
group of organisms that made it through the boundary I wonder if they
remember the big difference might be between extinct and almost
extinct.  The almost extinct group re-radiates the extinct group
doesn't.  This does not, however, mean that the almost extinct group
was unaffected.
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