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Re: Study Finds that a Single Impact Killed the Dinosaurs

> But there is an overall lack of terrestrial fossils in the uppermost
> Hell Creek fm.  Stuff really thins out ~20 m below the Hell Creek/Fort
> Union contact in eastern MT and in many places is almost non existant,
> so something other than an impact must have been happening to the
> environment.

To that particular environment -- not necessarily to the whole world.
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