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Re: Age of the Barun Goyot, Djadok(ht)a and Nemegt Formations
--- Tim Williams <email@example.com> wrote:
> 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.
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