At 12:22 PM 5/17/2002 -0700, Edward Hodges wrote:

>Fred- The Komodo Dragon wasn't around 65 million years ago, and either 
>were crocodiles like the ones you see now. They have evolved to become a 
>more effeciant and smaller predator. So, can you think over any large 
>Reptiles, that have survived for at least the last 65 million years that 
>are still the same size? The point is that all large creatures were wiped 
>out 65 million years ago. It's not clear if the impact killed them, if the 
>nuclear winter killed them, if they starved, or were wiped out by viruses. 
>The fact remains that ALL large creatures were wiped from the face of the 
>earth, with the possible exception of some sea creatures, 65 million years 
>ago by or from the effects of a large impact. By the way, 10ft., and 25 
>ft. are hardly large animals when compared to the large animals that 
>existed pre-impact.


What about whales?  Anyone know when the first whales appear in the fossil 
record?  I seem to remember something about a fossil find in the 
afghan/pakistan region that was thought to be  transitional between whales 
as we know them and a land bound animal.  Don't know the age of the find 
though.  Pakicephalus I think was the name but I am definitely not positive 
about that.

Steven



Steven Singletary
54-1224
Dept. Earth, Atmospheric and Planetary Sciences
M.I.T.
Cambridge, MA 02139
Tel - 617.253.6398
Fax - 617.253.7102


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