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Re: Size and Extinction (fwd)



At 11:58 PM 2/17/97 -0800, Larry <dunn1@idt.net> wrote:

>That means that 99.9% of all life forms were "failures."  
>
>Dinosaurs disappeared BECAUSE they were adaptable.  They radiated out 
>gloriously becoming extreme specialists just as you advocate, but weren't 
>generic enough to make it when the ol' exploding bolide from outer space 
>paid them a call.  

I don't know where you folks are getting your data from, but at last count
living dinosaur species outnumbered mammal species by MORE than two to one...

(Sometimes it seems like nobody pays attention to systemicists anymore... :-(

Thomas R. Holtz, Jr.
Vertebrate Paleontologist     Webpage: http://www.geol.umd.edu
Dept. of Geology              Email:th81@umail.umd.edu
University of Maryland        Phone:301-405-4084
College Park, MD  20742       Fax:  301-314-9661

"To trace that life in its manifold changes through past ages to the present
is a ... difficult task, but one from which modern science does not shrink.
In this wide field, every earnest effort will meet with some degree of
success; every year will add new and important facts; and every generation
will bring to light some law, in accordance with which ancient life has been
changed into life as we see it around us to-day."
        --O.C. Marsh, Vice Presidential Address, AAAS, August 30, 1877