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RE: titanosaur osteoderms

Yes, scutes are commonly less than 20 cm in lenght,
but sometimes....

I don't remember the size of the Ford scute but I've
saw some turtle-like ones of about 30 cm and found a
still unpublished enormeous of around 40 cm!!! (and I
mean a rounded one, not a spike-like).
So, there were big ones, but no articulated specimens
to know where and how many.

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

> Sebastián Apesteguía wrote:
> > That's why I don't think that the presence or
> absence
> > of scutes in Alamoss, Opis or Futalognkoss would
> mean
> > anything, because if they had only 2 or 3 big
> scutes
> > in the whole body, they are very difficult to
> > preserve.
> Yes, good point.  When an adult titanosaur skeleton
> is found mostly complete and at least partly
> articulated (like _Epachthosaurus_, or
> _Opisthocoelicaudia_ or even _Isisaurus_) they are
> interpreted, quite reasonably, as unarmored.  Then
> again, you have to wonder how much protection only
> two or three scutes would afford to a titanosaur, no
> matter how big the scutes were.  :-)
> While on the subject of big scutes, there is a
> report of very large osteoderms that are assumed to
> be of sauropod origin...
> Ford, T. L. (2001).  The armor of sauropods. 
> Journal of Vertebrate Paleontology 21 (3, Supp)
> Abstracts of papers, 61st Annual Meeting, Society of
> Vertebrate Paleontology, Museum of the Rockies,
> Montana State University, Bozeman, Montana, October,
> 3-6, p. 50a.
> I don't have much/any info about these mega-scutes.
> Cheers
> Tim
> Boo! Scare away worms, viruses and so much more! Try
> Windows Live OneCare!

Lic. Sebastián Apesteguía

Museo Patagónico de Ciencias Naturales,
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(8334) Río Negro, ARGENTINA

Sección de Paleontología de Vertebrados 
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Área de Paleontología. Fundación de Historia Natural 'Félix de Azara',
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V. Virasoro 732 (1405), Buenos Aires, ARGENTINA
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