Thursday, September 18, 2014

[Paleontology • 2012] Datanglong guangxiensis • A New Carcharodontosauria (Theropoda) from the Early Cretaceous of Guangxi, Southern China


  Datanglong guangxiensis
Mo, Zhou, Li, Hunag & Cao, 2014
illustration: EloyManzanero on @deviantART 
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.

Keywords: Theropoda; Carcharodontosauria; Lower Cretaceous; Xinlong Formation; Guangxi



MO, J., ZHOU, F., LI, G., HUANG, Z. and CAO, C. 2014, A New Carcharodontosauria (Theropoda) from the Early Cretaceous of Guangxi, Southern China. Acta Geologica Sinica, 88: 1051–1059. doi: dx.doi.org/10.1111/1755-6724.12272
Cau, Andrea. 2014. "Datanglong: un nuovo carcharodontosauriano?" [Datanlong: a new carcharodontosaur?]. Theropoda (in Italian) http://theropoda.blogspot.com/2014/08/datanglong-un-nuovo-carcharodontosauria.html

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