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Nigersaurus and the beaks

as Mike says, Bonitasaura also had a keratinooous
sheath that covered the cheeks (Jeff does not
necessarily agree with this). We can or not consider
this as a beak? Not sure, but it was a ramphoteca
anyway. You can see the notice here:
and reconstructions like in the original publication:
or by Gabriel Lio:
However, I agree in that the material in Nigersaurus
is beautiful and astonishing.
All the Best. 

--- "T. Michael Keesey" <keesey@gmail.com> escribió:

> On Nov 15, 2007 5:36 PM, Dann Pigdon
> <dannj@alphalink.com.au> wrote:
> > Here's the full paper:
> >
> >
> >
> > This seems to the be the closest any known
> sauropod came to developing a
> > beak.
> Don't forget _Bonitasaura_, of the keratinous
> cheeks.
> -- 
> Mike Keesey

Lic. Sebastián Apesteguía

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Tel-fax: 5411-49051100 i. 1228, secretaria@fundacionazara.org.ar 

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