Re: Pygostyles in Oviraptorosauria

["Alessandro Marisa" <amaris@tin.it>]

----- Original Message -----
From: Stacey ...
To: dinosaur@usc.edu
Sent: Monday, July 02, 2001 3:05 PM
Subject: Pygostyles in Oviraptorosauria

>I remember briefly reading that an Oviraptor specimen has been found with a
pygostyle; would >any one know the full species name of this animal, how
complete the fossil was and its >geographic location?

If I remeber correctly actually there is no Oviraptor specimen found with a
pygostyles, I think that the Oviraptorosaurs that you are interesting on is
Nomingia gobiensis, which comes from the Late Cretaceous strata at Bugeen
Tsav, Trans-Altai (Nemegt Formation - ?upper Campanian and ?lower
Maastrichatina (Gradzinski et al. 1997) - ?mid Maastrichtian (Jerzykiewicz &
Russell 1991)) Gobi, Mongolia. The HoloType (GIN 100/119) consist of an
incomplete postcranial skeleton that including a continuous series of
vertebrae comprising 13 presacrals, 5 synsacrals, 24 caudals plus most
chevrons, the complete pelvis, 10 fragmentary ribs, several gastralia, the
left femur and both tibiae and fibulae. Nomingia gobiens is assigned to
Oviraptorosaurs by the following characters: pneumatized caudal vertebrae,
posteriorly concave ischium and deep cervicodordal hypapophysis.

Refs: Barsbold, Osmolska, Watabe, Currie & Tsogtbaatar 2000 A new
oviraptorosaur (Dinosauria, Theropoda) from Mongolia: The first dinosaur
with a pygostyle. Acta Palaeontologica Polonica. Vol.45 n°2 pp:97-106.

By
____________________________________________
Marisa Alessandro
"Volounteer of Museo Paleontologico Cittadino, Monfalcone"
Via Achille Grandi n°18
38068 ROVERETO (TN) ITALY
Tel:039-0464-434658 Email amaris@tin.it
Museum Web-Page: http://www.fante.speleo.it
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