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A NEW GENUS OF PACHYCEPHALOSAURIA FROM LAIYANG, SHANTUNG

Dong Zhi-ming Institute of Vertebrate Paleontology and Palaeoanthropology, Academia Sinica  
A little Pachycephalosaur that described in this note was obtained from the WangFormation, Laiyang, shantung. It was proposed as a new genus and new species,Micropachycephalosaurus hongtuyanensis. Galton (1971) rediscussed the problem of the sexual dimorphism of pachycepha-losauridae. He pointed out that form with the rough dome and extensive shelf wereregarded as males, while those of flatly roofed as females. Here, these characters weresuggeseted as taxonomical features. The pachycephalosauria was separated as twofamilies: Pachycephalosauridae and Homalocephaleridae. The age of new species is upper Cretaceous (Campanian).
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