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RE: new papers in Journal of Paleontology



Jay Nair wrote:

A REASSESSMENT OF DIANCHUNGOSAURUS LUFENGENSIS AN ENIGMATIC REPTILE FROM THE LOWER LUFENG FORMATION (LOWER JURASSIC) OF YUNNAN PROVINCE, PEOPLE'S REPUBLIC OF CHINA. PAUL M. BARRETT, XU XING,
pages 981-986.

It's no longer a heterodontosaurid (and never was)...

Abstract: _Dianchungosaurus lufengensis_ was erected on the basis of fragmentary isolated jaw elements (a left premaxilla and left and right partial lower jaws) from the Lower Lufeng Formation (Lower Jurassic) of Yunnan Province, China. Yang referred _Dianchungosaurus_ to the
Heterodontosauridae (Ornithischia, Ornithopoda), as several features appeared to indicate affinity with the southern African genus _Heterodontosaurus_. However, reexamination of the type material demonstrates that the holotype specimen of _Dianchungosaurus_ represents a chimaera of
prosauropod dinosaur and mesoeucrocodylian remains: the mesoeucrocodylian premaxilla is distinctive and allows the genus to be diagnosed on the basis of several autapomorphic features. Revision of this genus thereby invalidates the only reported occurrence of a heterodontosaurid dinosaur from Asia.


Cheers

Tim