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Re: Dino extinctions

"Bosco" wrote:
 >The one fact that Bakker brings up that seems to make sense about
 >this episode at the K-T is the lack of mass die off in tropical
 >animals that would certainly have occurred. "Ask not why the
 >dinosaurs died off, but why the frogs and turtles lived" seems to be
 >what he said.

Actually, perhaps we should ask not why the dinosaurs died off, but why >they
didn't come back< after the big die-off (except for birds). I have a
speculative answer, but it's too complicated to describe here.