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古角龍屬

古角龙属
化石时期:下白堊紀,125 Ma
大島氏古角龍的想像圖
无效状况
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: 恐龍總目 Dinosauria
目: 鸟臀目 Ornithischia
科: 古角龙科 Archaeoceratopsidae
属: 古角龙属 Archaeoceratops
Dong & Azuma, 1997
模式種
大島氏古角龍
Archaeoceratops oshimai

Dong & Azuma, 1997
  • 大島氏古角龍 A. oshimai
    Dong & Azuma, 1997
  • 漁井子古角龍 A. yujingziensis
    You et al., 2010[1]

古角龍屬學名Archaeoceratops)是角龍亚目古角龍科的一個,是種基礎新角龍類恐龍,生活於下白堊紀阿普第階)的中國中北部。古腳龍似乎是種小型的雙足恐龍,身長約一公尺。不同於後期角龍類,古角龍的頭盾小,沒有角。

發現及物種

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漁井子古角龍的想像圖

古角龍的化石發現於中國甘肅省馬鬃山地區公婆泉盆地的新民堡組[2]模式種大島氏古角龍A. oshimai),是由董枝明及東洋一在1997年敘述、命名。第二個物種是漁井子古角龍 ( A. yujingziensis ),是由尤海魯等人在2010年命名。古角龍是該地區第一個發現的基礎新角龍類

古角龍的正模標本(編號IVPP V11114)是一個部份完整的身體骨骼,包含頭顱骨尾椎骨盆、以及大部分的後腳掌。副模標本(編號IVPP V11115)是一個不完整的身體骨骼,包含保存相當好的尾椎、部份後肢、一個完全保存的腳部,體型比正模標本略小。

分類

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古角龍屬於角龍亚目,這是一群有著類似鸚鵡喙狀嘴的植食性恐龍,生活於白堊紀北美洲亞洲。在1997年,董枝明及東洋一將牠們分類在一個新的古角龍科之內。

食性

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就像其他角龍亚目恐龍,古角龍是植食性恐龍。在白堊紀顯花植物是受地理環境所限制的,所以牠們很有可能是以當時最顯著的蕨類蘇鐵科松科為食物。牠用那鋒利的喙狀嘴來咬斷葉子的。

參考資料

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  • On a primitive Neoceratopsian from the early Cretaceous of China. Dong, Z. and Azuma, Y. Sino-Japanese Silk Road dinosaur expedition, Dong, Z. (ed). China Ocean press; 68-89 (1997).
  • Redescription of neoceratopsian dinosaur Archaeoceratops and early evolution of Neoceratopsia. You, H. and Dodson, P. Acta Palaeontologica Polonica 48 (2); 261-272 (2003).
  • Archaeoceratops in the Dino Directory
  1. ^ You, Hai-Lu; Tanque, Kyo; and Dodson, Peter. A new species of Archaeoceratops (Dinosauria: Neoceratopsia) from the Early Cretaceous of the Mazongshan area, northwestern China. Ryan, Michael J.; Chinnery-Allgeier, Brenda J.; and Eberth, David A. (editors.) (编). New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium. Bloomington and Indianapolis: Indiana University Press. 2010: 59–67. ISBN 978-0-253-35358-0. 
  2. ^ F. Tang, Z. -X. Luo, Z. -H. Zhou, H. -L. You, J. A. Georgi, Z. -L. Tang and X. -Z. Wang. (2001). "Biostratigraphy and palaeoenvironment of the dinosaur-bearing sediments in Lower Cretaceous of Mazongshan area, Gansu Province, China." Cretaceous Research, 22(1): 115-129. doi:10.1006/cres.2000.0242
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古角龍屬
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