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A New Carcharodontosauria (Theropoda) from the Early Cretaceous of Guangxi, Southern China

A New Carcharodontosauria (Theropoda) from the Early Cretaceous of Guangxi, Southern China 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Geologica Sinica (English Edition) Wiley

A New Carcharodontosauria (Theropoda) from the Early Cretaceous of Guangxi, Southern China

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References (39)

Publisher
Wiley
Copyright
© 2014 Geological Society of China
ISSN
1000-9515
eISSN
1755-6724
DOI
10.1111/1755-6724.12272
Publisher site
See Article on Publisher Site

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.

Journal

Acta Geologica Sinica (English Edition)Wiley

Published: Aug 1, 2014

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