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大师龙属

大师龙属
化石时期:上白垩纪, 66 Ma
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 蜥形纲 Sauropsida
总目: 恐龙总目 Dinosauria
目: 鸟臀目 Ornithischia
科: 角龙科 Ceratopsidae
亚科: 角龙亚科 Ceratopsinae
属: 大师龙属 Polyonax
Cope, 1874
模式种
大师龙
Polyonax mortuarius

Cope, 1874

大师龙属学名Polyonax)是角龙科恐龙的一,化石发现于美国科罗拉多州的丹佛组,地质年代属于上白垩纪麦斯特里希特阶。由于化石的保存状况很差,所以大师龙被认为是疑名

历史

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在1873年,古生物学家爱德华·德林克·科普(Edward Drinker Cope)在美国西部挖出了一些恐龙的骨骸标本,隔年他将这些标本命名为大师龙[1]正模标本(编号AMNH 3950)包括了一头亚成体的三节背椎、四肢骨头、以及角髓[2]。大师龙曾一度被误会为鸭嘴龙科,或是糙齿龙异名[3]。但在1907年的第一个角龙类专题论文中,大师龙被确认属于角龙科,而骨骸材料不明确[4]。目前这个学名已经很少被使用,因为大师龙的研究早于有角恐龙的研究[5]。大师龙目前被归类于角龙科的分类未定属[6]

大师龙有时被列作奇迹龙[7]三角龙[8]异名,但模式标本的过于破碎、不完整,不能够确定牠们是否为异名。

古生物学

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大师龙是大型、四足的草食性恐龙,有角及颈部头盾[6]

参考资料

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  1. ^ Cope, E.D. Report on the stratigraphy and Pliocene vertebrate paleontology of northern Colorado. Bulletin of the U.S. Geological and Geographical Survey of the Territories. 1874, 9: 9–28. 
  2. ^ Glut, D.F. Polyonax. Dinosaurs: The Encyclopedia. McFarland & Company. 1997: 723-724. ISBN 978-0-89950-917-4. 
  3. ^ Hatcher, J.B. The genus and species of the Trachodontidae (Hadrosauridae, Claosauridae) Marsh. Annals of the Carnegie Museum. 1902, 14 (1): 377–386. 
  4. ^ Hatcher, J.B., Marsh, O.C., and Lull, R.S. The Ceratopsia. Washington, D.C.: Government Printing Office. 1907: 300 pp. ISBN 978-0-405-12713-7. 
  5. ^ Dodson, P. The Horned Dinosaurs. Princeton University Press:Princeton, New Jersey. 1996. ISBN 978-0-691-02882-8. 
  6. ^ 6.0 6.1 Dodson, P., Forster, C.A., and Sampson, S.D. Ceratopsidae. Weishampel, D.B., Dodson, P., and Osmólska, H. (eds.) (编). The Dinosauria second edition. Berkeley: University of California Press. 2004: 494–513. ISBN 978-0-520-24209-8. 
  7. ^ Romer, A.S. Osteology of the Reptiles. Chicago: University of Chicago Press. 1956: 1–772. ISBN 978-0-89464-985-1. 
  8. ^ Lambert, D., and the Diagram Group. (1990). The Dinosaur Data Book. Facts on File:Oxford, England, 320 p.
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大师龙属
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