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Re: "Sleeping" Guaibasaurus described

Apparently I don't have access to the most recent 12 months of
Alcheringa; if someone would pass this along to me I'd be most


On Mon, Mar 5, 2012 at 11:42 AM, Ben Creisler <bcreisler@gmail.com> wrote:
> From: Ben Creisler
> bcreisler@gmail.com
> This is the official paper for a news story in Spanish that I posted
> on the DML a few weeks back about a Guaibasaurus fossil found in a
> birdlike "sleeping" posture.
> Agnolin, F. & Martinelli, A.G. (2012)
> Guaibasaurus candelariensis (Dinosauria, Saurischia) and the early
> origin of avian-like resting posture.
> Alcheringa (1–5) (advance online publication)
> ISSN 0311-5518
> DOI:10.1080/03115518.2012.634203
> http://www.tandfonline.com/doi/abs/10.1080/03115518.2012.634203
> A specimen of the basal saurisquian Guaibasaurus candelariensis
> Bonaparte, Ferigolo and Ribeiro (UFRGS-PV-0725-T) from the Faxinal do
> Soturno locality, Rio Grande do Sul State, Brazil (Caturrita
> Formation; Late Triassic) lacks any sign of post-mortem transport and
> burial deformation, and exhibits features (flexed forelimbs, folded
> hindlimbs under the body and curved neck) that indicate a typical
> avian-like resting position. The presence in Guaibasaurus of an
> avian-like resting posture and related physiological implications
> would extend this unique trait, previously considered restricted to
> derived maniraptoran theropods, to the base of the Theropoda (or even
> Saurischia) clade.

Scott Hartman
Scientific Advisor/Technical Illustrator
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