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Re: Idaho Cretaceous dinosaur site + other news



Could this be the long-awaited North American spinosaurid?!?!?

On Wed, May 21, 2014 5:41 pm, Ben Creisler wrote:
> From: Ben Creisler
> bcreisler@gmail.com
>
> Some recent news items:
>
> Idaho dinosaur site found
>
> http://www.kbzk.com/news/msu-paleontologists-discover-the-most-diverse-dinosaur-fossil-site-yet-found-in-idaho/
>
>
> Link to Rocky Mountain and Cordilleran sections of Geological Society
> of America conference abstract:
>
> https://gsa.confex.com/gsa/2014RM/webprogram/Paper238289.html
>
> Extract:
>
> Theropods are represented by enigmatic teeth of a large, possibly
> piscivorous theropod, and teeth of 2 smaller uncertain forms; as well
> as isolated vertebrae, one of which suggest a possible neovenatorid
> allosauroid. Armor scutes and teeth indicate the presence of an
> ankylosaur. The ornithopod Oryctodromeus, which dominates the fossil
> assemblage of the Wayan, is well-represented by a tooth and numerous
> bones. A hadrosaurid is known from one tooth. Eggshell of the oogenus
> Macroelongatoolithus (probably representing a large oviraptorid) is
> common. Mammals include a non-cimolodontan multituberculate as well as
> a possible triconodontid. Turtles, fish, crocodilians, and possible
> lizards are represented by isolated remains.
>
> Though the nature of the construction and heavy soil cover did not
> allow detailed observations, the lithology suggests the deposit is a
> fluvial lag. Varying degrees of taphonomic modification are indicated
> by a mixture of delicate elements such as an Oryctodromeus dentary
> retaining fully erupted teeth, broken limb shafts missing ends, and
> unidentifiable rounded and abraded bone fragments. Except for a few
> articulated Oryctodromeus caudal vertebrae with ossified tendons, all
> fossil bones are isolated and unassociated. These observations suggest
> that the deposit is a significantly time-averaged accumulation
> partially sourced from upstream floodplains proximal to the fluvial
> system. Having produced remains from at least 4 kinds of theropods, 3
> types of ornithischians, 1 or more types of mammals, and aquatic
> vertebrates, this locality easily represents the most significant
> vertebrate fossil locality in the Wayan Formation. Many fossils await
> preparation and collection of fossils from stockpiled matrix in the
> field will continue in 2014.
>
> Other Mesozoic presentations:
>
> https://gsa.confex.com/gsa/2014RM/webprogram/Session34609.html
>
> ==
>
>
> Scotland fossils threatened
>
> http://www.bbc.com/news/uk-scotland-highlands-islands-27484648
>
> ==
>
> Mary Anning quiz
>
> http://www.mirror.co.uk/news/uk-news/mary-anning-take-dinosaur-quiz-3580752
>
> ===
>
> In Chinese:
>
> New  Shanxi Geological Museum in China-- "treasure" is specimen of
> Triassic archosaur Shansisuchus (bottom photo)
>
> http://roll.sohu.com/20140517/n399682378.shtml
>


Thomas R. Holtz, Jr.
Email: tholtz@umd.edu   Phone: 301-405-4084
Office: Centreville 1216
Senior Lecturer, Vertebrate Paleontology
Dept. of Geology, University of Maryland
http://www.geol.umd.edu/~tholtz/
Fax: 301-314-9661

Faculty Director, Science & Global Change Program, College Park Scholars
http://www.geol.umd.edu/sgc
Fax: 301-314-9843

Mailing Address:        Thomas R. Holtz, Jr.
                        Department of Geology
                        Building 237, Room 1117
                        University of Maryland
                        College Park, MD 20742 USA