[dinosaur] Shishugounykus, new alvarezsaurian theropod from Upper Jurassic of China (free pdf)

Ben Creisler
[email protected]

A new paper:

Shishugounykus inexpectus gen. et sp. nov

Zichuan Qin, James Clark, Jonah Choiniere & Xing Xu (2019)
A new alvarezsaurian theropod from the Upper Jurassic Shishugou Formation
of western China.
Scientific Reports 9, Article number: 11727
DOI: https://urldefense.proofpoint.com/v2/url?u=https-3A__doi.org_10.1038_s41598-2D019-2D48148-2D7&d=DwIBaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=F6kFRr1vEh3-6WZwm9hC9fXhvFFJObCTRLXX5SQ2Rc0&s=Hxbf7xRuf3Npz6quKKKnbHOgmX73Utment-tmz0j83c&e= 
https://urldefense.proofpoint.com/v2/url?u=https-3A__www.nature.com_articles_s41598-2D019-2D48148-2D7&d=DwIBaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=F6kFRr1vEh3-6WZwm9hC9fXhvFFJObCTRLXX5SQ2Rc0&s=KxTKrtI-lABxl6zj8wPCz6eSpttUVCgeHQFfUNB4BSk&e= 

Free pdf:
https://urldefense.proofpoint.com/v2/url?u=https-3A__www.nature.com_articles_s41598-2D019-2D48148-2D7.pdf&d=DwIBaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=F6kFRr1vEh3-6WZwm9hC9fXhvFFJObCTRLXX5SQ2Rc0&s=7NVGmrAiCac42z-190bMTGXgjKQDKLtFeN-xBeL3DC8&e= 


Alvarezsaurian dinosaurs, a group of bizarre theropods with greatly
shortened and modified forelimbs, are known mostly from the Cretaceous of
Asia and South America. Here we report a new alvarezsaurian, Shishugounykus
inexpectus gen. et sp. nov, based on a specimen recovered from the
Middle-Upper Jurassic Shishugou Formation of the Junggar Basin, western
China. Together with two other alvarezsaurians from this formation, i.e.,
Haplocheirus sollers and Aorun zhaoi, these Shishugou forms represent the
only known Jurassic alvarezsaurians worldwide. Similar to the two other
Shishugou alvarezsaurians, this new alvarezsaurian displays early stages in
the development of the highly modified alvarezsaurian forelimb, but it
possesses a number of manual features closer to the typical coelurosaurian
theropod condition. Combining morphological and histological features, our
analysis indicates that the earliest known alvarezsaurians are variable in
size and other important morphological features, and in particular display
a mosaic distribution of forelimb features.




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