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Datanglong, new theropod (Carcharodontosauria) from Lower Cretaceous of China



Ben Creisler
bcreisler@gmail.com

A new paper:


Jinyou MO, Fusheng ZHOU, Guangning LI, Zhen HUANG, and Chenyun CAO (2014)
A New Carcharodontosauria (Theropoda) from the Early Cretaceous of
Guangxi, Southern China.
Acta Geologica Sinica - English Edition 88(4): 1051–1059
DOI: 10.1111/1755-6724.12272
http://onlinelibrary.wiley.com/doi/10.1111/1755-6724.12272/abstract

A new large-bodied theropod dinosaur, Datanglong guangxiensis gen. et
sp. nov., was recovered from the Lower Cretaceous Xinlong Formation of
the Datang Basin, Guangxi. It is unique in several features including:
posteriormost dorsal vertebra with teardrop-shaped pneumatic foramen
confined by enlarged pcdl, acpl and the centrum; posteriormost dorsal
with well-developed, horizontal prpl; posteriormost dorsal with a
parapophysis projecting more laterally than the diapophysis; brevis
fossa shallow with short, ridge-like medial blade; and iliac pubic
peduncle with posteroventrally expanded margin. Cladistic analysis
supports the idea that this new taxon Datanglong guangxiensis is a
primitive member of the Carcharodontosauria in possessing two
unambiguous synapomorphies: large external pneumatic foramina and
internal spaces present in the lateral surface of ilium, and a
peg-and-socket ischiac articulation with the ilium. The presence of
the new taxon from Guangxi further confirms that Carcharodontosauria
were cosmopolitan large-bodied predators during the Early-mid
Cretaceous.


NOTE: This paper has not been posted yet on the Chinese open-access link.

http://www.geojournals.cn/dzxben/ch/index.aspx