[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: Age of the Barun Goyot, Djadok(ht)a and Nemegt Formations




--- Tim Williams <twilliams_alpha@hotmail.com> wrote:

> The 
> validity of genera often lies in the eye of the
> beholder, and so makes for a 
> poor yardstick in biostratigraphy.

 AFAIK there was never any doubt that S.
angustirostris and S. osborni belong in the same
genus; they may even be the same species. 




                
__________________________________ 
Yahoo! Mail - PC Magazine Editors' Choice 2005 
http://mail.yahoo.com