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中国西北马鬃山地区早白垩世黎明角龙属(恐龙:新角龙类)一未定种

2012年第50卷 第2期: 170-180

发表日期:2012-04-23来源:放大 缩小

编辑:尤海鲁,Eric MORSCHHAUSER, Peter DODSON, 李大庆

摘要:记述了基干新角龙类恐龙黎明角龙属一未定种。标本发现于中国西北马鬃山地区俞井子盆地下白垩统新民堡群,包括一关联的具有头骨和下颌的部分骨架。未定种与模式种(皱褶种)相比具有较长的吻部,较窄的鼻骨及其他一些特征。该未定种的发现使黎明角龙属的地理分布范围向南东延伸了约100 km, 也使马鬃山地区的早白垩世成为世界上惟一保存大量基干角龙类的区域。

关键词:马鬃山地区,俞井子盆地;早白垩世,新民堡群;恐龙,新角龙类

卷期:50 02

 

AURORACERATOPS SP. (DINOSAURIA: NEOCERATOPSIA) FROM THE EARLY CRETACEOUS OF THE MAZONGSHAN AREA IN NORTHWESTERN CHINA

 

YOU Hai-LuEric MORSCHHAUSERPeter DODSONLI Da-Qing

 

Abstract  A specifically indeterminate specimen of the basal neoceratopsian dinosaur Auroraceratops is described. Auroraceratops sp. is based on a partial articulated skeleton, including the skull and lower jaw, collected from the Lower Cretaceous Xinminpu Group in the Yujingzi Basin of the Mazongshan area, northwestern China. A. sp. differs from the type species A. rugosus in having a longer face and a narrower nasal, among other features. The finding of A. sp. extends the geographic distribution of this genus approximately 100 km southeast, and makes the Early Cretaceous Mazongshan area the richest single basal neoceratopsian locality in the world.
Key words  Yujingzi Basin, Mazongshan area; Early Cretaceous, Xinminpu Group; Dinosauria, Neoceratopsia

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