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RE: Overosaurus, new titanosaurian sauropod from Late Cretaceous of Argentina



I'm thinking we'll need a sauropod named Ungerasaurus, too, now. Named for 
Franz Unger, a double honor for his double interests.

Cheers,

  Jaime A. Headden
  The Bite Stuff (site v2)
  http://qilong.wordpress.com/

"Innocent, unbiased observation is a myth." --- P.B. Medawar (1969)


"Ever since man first left his cave and met a stranger with a
different language and a new way of looking at things, the human race
has had a dream: to kill him, so we don't have to learn his language or
his new way of looking at things." --- Zapp Brannigan (Beast With a Billion 
Backs)


----------------------------------------
> Date: Thu, 4 Jul 2013 16:03:09 -0700
> From: bcreisler@gmail.com
> To: dinosaur@usc.edu
> Subject: Overosaurus, new titanosaurian sauropod from Late Cretaceous of 
> Argentina
>
> From: Ben Creisler
> bcreisler@gmail.com
>
>
> A new sauropod in Zootaxa:
>
> Rodolfo A. Coria, Leonardo S. Filippi, Luis M. Chiappe, Rodolfo García
> & Andrea B. Arcucci (2013)
> Overosaurus paradasorum gen. et sp. nov. , a new sauropod dinosaur
> (Titanosauria: Lithostrotia) from the Late Cretaceous of Neuquén,
> Patagonia, Argentina.
> Zootaxa 3683 (4): 357–376
> doi: http://dx.doi.org/10.11646/zootaxa.3683.4.2
> Preview first page:
> http://www.mapress.com/zootaxa/2013/f/z03683p376f.pdf
>
> A new lithostrotian sauropod, the small-sized Overosaurus paradasorum
> n. gen et sp. from the Anacleto Formation (Campanian, Late Cretaceous,
> Neuquén Group, Patagonia, Argentina) is here described. The specimen
> (MAU-Pv-CO-439) consists of a fully articulated vertebral series from
> the 10th cervical to the 20th caudal vertebra, the last cervical ribs,
> several dorsal ribs in articulation with their respective vertebrae,
> the complete right ilium and fragments of the left ilium. Overosaurus
> paradasorum is diagnosed by a unique combination of characters that
> includes (1) posterior cervical vertebrae with long pre- and
> postzygapophyses that project beyond the anterior and posterior
> borders of the centrum, respectively, (2) postspi

> all dorsal neural spines, (3) wide and massive 9th and 10th caudal
> centra that are slightly excavated laterally and have relatively flat
> ventral surfaces, (4) laminar projection on the posterior border of
> the second and third dorsal rib, (5) ilium proportionally shorter
> anteroposteriorly and taller dorsoventrally than in other
> lithostrotians, and (6) the preacetabular process of the ilium
> strongly deflected laterally and with a ventrolaterally tapering end.
> Analysis of the phylogenetic relationships of Overosaurus places it
> within the Aeolosaurini, as the sister taxon of a monophyletic group
> formed by Aeolosaurusrionegrinus, A. maximus, Gondwanatitan faustoi
> and Pitekunsaurus macayai. Overosaurus is a new representative of a
> highly diversified assemblage of Campanian lithostrotians from
> Patagonia that includes both Aeolosaurini and saltasaurids (e.g.
> Saltasaurus, Neuquensaurus)—this small new taxon falls within the low
> end of the size spectrum represented by these Late Cretaceous
> sauropods.