Not a bad idea, but if we were to be wiped out by comet, I would like to think that some of our "monuments" like tall buildings and roads would have survived, even they could have been buried under tons of dirt after 65 million years.
Which means that any archeological dig would have uncover our achievements before discovering our fossil bones. Just my 2 cents.
[added]
Just remembered something, the plot sounds a bit like what happened to the humans in the "Planet of The Apes".
[ 07-04-2004, 09:10 PM: Message edited by: Paladin2000 ]