Re: disease theory of dinosaur extinction

[Crpntr@ix.netcom.com (Kenneth Carpenter)]

Tom Holtz wrote:
>
>Bakker's explanation for the simultaneity (or near-so) between 
terrestrial
>and marine extinctions is this - the same draining of the seaways which
>opened land bridges greatly altered the food chain in the seas (a 
likely
>event of removing vast regions of warm, shallow water).  Decrease in 
marine
>productivity, he reasons, was sufficient to drive the large predatory
>marine reptiles to extinction.
>
>Actually, this is one of the aspects of Bakker's theory which appeals 
to me
>- it shows that marine and terrestrial extinctions may have the same
>ultimate cause, but radically different proximate causes.
>

Ah, but how to account for the extinction of the dinosaurs in Asia and 
India at the end of the Cretaceous, where there were no seaways?        
        
>Thomas R. Holtz, Jr.                                  
tholtz@geochange.er.usgs.gov
>Vertebrate Paleontologist in Exile                 Phone:      
703-648-5280
>U.S. Geological Survey                               FAX:      
703-648-5420
>Branch of Paleontology & Stratigraphy
>MS 970 National Center
>Reston, VA  22092
>U.S.A.
>
>
>
>