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Re: K/T impact (was Re: [for some reason] Tim's theory)
In a message dated 5/17/01 3:30:19 PM EST, firstname.lastname@example.org writes:
<< Some hypotheses are generally accepted (continental drift, etc). The
bolide is not one of them--sorry. >>
You're right, there is new data. Bolides are now being held responsible for
not just the KT extinction but also the PT extinction and the TJ extinction.
Nothing but global phenomena (extraterrestrial, climatic, massive volcanic)
can be responsible for global extinctions. Extinction via ecological
competition is too sporadic and local a phenomenon to have a global compass.