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[dinosaur] Protoceratops from Lower Cretaceous of Ordos Region, Inner Mongolia + .ceratopsid tooth from Mississippi (free pdfs)





Ben Creisler
bcreisler@gmail.com




A paper not yet mentioned:

[in Chinese]

CHEN Xiao-Yun (2017)
The Discovery and Significance of the Protoceratopsid Dinosaur from the Lower Cretaceous of Ordos Region, Inner Mongolia.
Acta Geoscientica Sinica,38(2):154-158.
doi:10.3975/cagsb.2017.02.08.
http://www.cagsbulletin.com/dqxben/ch/reader/view_abstract.aspx?file_no=20170208&flag=1


Free pdf:

http://www.cagsbulletin.com/dqxben/ch/reader/create_pdf.aspx?file_no=20170208&flag=1&journal_id=dqxben&year_id=2017



 A partial skull of protoceratopsid dinosaur from the Lower Cretaceous strata of Hanggin Banner, Ordos City, Inner Mongolia, is described and assigned to Protoceratops sp. This is the first report of protoceratopsid dinosaur from the Lower Cretaceous of China, and also the first record of protoceratopsid dinosaur from Ordos region. This discovery not only expands the distribution of protoceratopsid dinosaur in China but also enriches the Ordos dinosaur fauna.


==

Also, a revised version of a paper posted earlier:

Andrew A. Farke​ & George E. Phillips (2017)
The first reported ceratopsid dinosaur from eastern North America (Owl Creek Formation, Upper Cretaceous, Mississippi, USA). 
PeerJ Preprints 5:e2746v2
doi:  https://doi.org/10.7287/peerj.preprints.2746v2
https://peerj.com/preprints/2746/


Ceratopsids (“horned dinosaurs”) are known from western North America and Asia, a distribution reflecting an inferred subaerial link between the two landmasses during the Late Cretaceous. However, this clade was previously unknown from eastern North America, presumably due to limited outcrop of the appropriate age and depositional environment as well as the separation of eastern and western North America by the Western Interior Seaway during much of the Late Cretaceous. A dentary tooth from the Owl Creek Formation (late Maastrichtian) of Union County, Mississippi, represents the first reported occurrence of Ceratopsidae from eastern North America. This tooth shows a combination of features typical of Ceratopsidae, including a double root and a prominent, blade-like carina. Based on the age of the fossil, we hypothesize that it is consistent with a dispersal of ceratopsids into eastern North America during the very latest Cretaceous, presumably after the two halves of North America were reunited following the retreat of the Western Interior Seaway.