| 广东河源盆地晚白垩世霸王龙类牙齿化石的发现及其意义 |
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| 引用本文： | 吕君昌,刘艺,黄志青,袁伟强,黄东.广东河源盆地晚白垩世霸王龙类牙齿化石的发现及其意义[J].地质通报,2009,28(6):703-704. |
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| 作者姓名： | 吕君昌 刘艺 黄志青 袁伟强 黄东 |
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| 作者单位： | 1. 中国地质科学院地质研究所,北京,100037
2. 广东省河源市博物馆,广东,河源,517000 |
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| 基金项目： | 国家自然科学基金，教育部留学回国人员科研启动基金，中国地质科学院地质研究所基本科研业务费专项经费项目 |
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| 摘 要： | 河源盆地晚白垩世东源组发现的霸王龙类牙齿化石估计长度大于10cm。从其大小和形态判断，应为霸王龙类的牙齿。牙齿保存部分稍微弯曲，中部横截面呈微弱的D形。牙齿的釉质非常薄，釉质脱落后暴露出的牙齿部分显示出明显的纵向条纹。牙齿的牙本质厚度在不同方向上变化较大,且牙本质具有明显的分层现象。该牙齿化石的发现，为以后在该地区晚白垩世地层中发现霸王龙类骨骼化石提供确凿的依据。
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| 关 键 词： | 霸王龙类牙齿 晚白垩世 河源盆地 广东 |
New discovery of Late Cretaceous tyrannosaurid tooth from the Heyuan Basin, Guangdong Province, Southern China |
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| L Jun-chang,LIU Yi,HUANG Zhi-qing,YUAN Wei-qiang,HUANG Dong.New discovery of Late Cretaceous tyrannosaurid tooth from the Heyuan Basin, Guangdong Province, Southern China[J].Geologcal Bulletin OF China,2009,28(6):703-704. |
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| Authors: | L Jun-chang LIU Yi HUANG Zhi-qing YUAN Wei-qiang HUANG Dong |
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| Institution: | 1. Institute of Geology, Chinese Academy of Geological Sciences,2. Heyuan Musuem |
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| Abstract: | cm, which was found from the Late Cretaceous Dongyuan Formation of the Heyuan basin, is reported herein. Judged from the size and morphology of the tooth, it should belong to tyrannosaurid. The preserved portion of the tooth is slightly curved with a weakly D-shaped cross-section near the middle part. The tooth enamel is very thin, and the exposed portion of the tooth displays distinct longitudinal striations. The dentin thickness varies in different directions and bears a distince delamination phenomenon. The tyrannosaurid tooth provides a solid evidence for the discovery of tyrannosaurid skeleton form the Late Cretaceous stratum in the near future. |
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| Keywords: | Tyrannosaurid tooth Late Cretaceous Heyuan basin Guangdong |
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