Re: Selective Extinction

["Peter Von Sholly" <vonrex@gte.net>]

----------
> From: Peter Von Sholly <vonrex@gte.net>
> To:; dinosaur@usc.edu
> Subject: Re: Selective Extinction
> Date: Monday, October 27, 1997 1:19 PM
> 
> Yes, pterosaurs perished (somewhere along the way anyhow).  Maybe they
> weren't as adept at flying as birds.  And as somebody said, "what about
the
> mosasaurs and sharks?"  (as in how did my question explain their
> extinctions) I must confess that I thought sharks survived!  You learn
> something new all the time. I suppose a big impact (with intense heat)
> would have  tremendous effects on the oceans- especially if it hit in the
> water.  Maybe the surface water got super hot, devastating air breathing
> aquatics, maybe gigundous waves caused havoc-  yet as I thought I said,
my
> question did not pretend to answer the global extinction question.  I
know
> dinosaurs were on the wane- I am aware of gradualist ideas on the
subject. 
> And it seems there may have been many impacts, perhaps over a long time. 
I
> merely wondered if certain sized and heighted creatures were more
> vulnerable to a shock wave than creatures who could lie low, or soar
above.
>  In certain isolated scenarios, at least,  it seems they may have been.
> ----------
> > From: Bettyc <Bettyc@flyinggoat.com>
> > To: dinosaur@usc.edu
> > Subject: Re: Selective Extinction
> > Date: Monday, October 27, 1997 10:56 AM
> > 
> > 
> > birds, of course, survived, whereas pterasauroids did not so if you can
> > perhaps explain why?
> > Wehn Mt. St. Helens went off, birds that flew away survived, but still
> > had to deal with the ash that covered everything afterwards to search
> > for food and water.
> > -- 
> >            Betty Cunningham  
> >