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Re: Selective Extinction

> No, sharks suffered tremendously.  They survived as a clade, but the
> diversity in that clade dropped significantly.  Of course, if we make
> the not unreasonable assumption that a number of species evolved in
> tandem with inland seas, the regression of said seas would result in a
> lot of dead sharks.  They wouldn't, of course, even notice an asteroid
> (unless they happened to be skimming the surface that day).

     If the asteroid hit in or near the ocean (as it did if Chixulub is 
the smoking gun), you can bet they would notice it. Imagine what an impact
and energy release like that could do to ocean currents world-wide.

LN Jeff