Re: Suspicious impact craters and iridium layers?

[Tim Donovan <uwrk2@yahoo.com>]

--- Dora Smith <villandra@austin.rr.com> wrote:

> Can it be that more than one factor contributed to
> such a catastrophic
> extinction, and that the extinction itself took
> longer than one factor would
> explain?    


 Sure. Recently Arens found evidence of environmental
deterioration, and waning of certain plant and animal
species in the upper Hell Creek. And some dinosaurs,
the centrosaurines and lambeosaurs, were already
greatly diminished or gone by the late Maastrichtian.
Btw, the new age of c 65.5 Ma for the K-T boundary
already appeared in the JVP a while back.





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