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角足龙类

角足龍類
化石时期:侏儸紀中期到白堊紀晚期,163–66.5 Ma
鴨嘴龍類角龍類的顱骨
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
演化支 頜齒類 Genasauria
演化支 新鳥臀類 Neornithischia
演化支 盾齒類 Clypeodonta
演化支 角足龍類 Cerapoda
Sereno, 1986
演化支

角足龙类学名Cerapoda)是鳥臀目的一個演化支或亞目。牠們是頜齒類裡,裝甲类的姐妹分類單元。角足龙类的特徵是下頜牙齒有一層厚琺瑯質。牠們的牙齒咀嚼時磨損不平均,並發展出銳利的脊狀,可讓角足龙类比其他鳥臀目恐龍切碎更堅硬的植物。

牠們可分為二或三個演化支。第一個是鳥腳亚目。其他兩個是腫頭龍亚目角龍亚目。後兩者因頭顱骨後方都擁有骨質突起,有時合稱頭飾龍類[1][2]

在1986年,保羅·塞里諾(Paul Sereno)建立角足龙类(Cerapoda),範圍包含:沃克氏副櫛龍恐怖三角龍的最近共同祖先,與其最近共同祖先的所有後代[1]

有數個物種難以歸類到鳥腳亚目頭飾龍類[3]

角足龙类比新鳥臀類(Neornithischia)的範圍狭窄。

分類

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以下演化樹主要根據理察·巴特勒(Richard J. Butler)在2005年的角足龙类恐龍研究:

參考資料

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  1. ^ 1.0 1.1 Richard J. Butler, Paul Upchurch and David B. Norman. The phylogeny of the ornithischian dinosaurs. Journal of Systematic Palaeontology. 2008, 6 (1): 1–40. doi:10.1017/S1477201907002271. 
  2. ^ Richard J. Butler, Jin Liyong, Chen Jun, Pascal Godefroit. The postcranial osteology and phylogenetic position of the small ornithischian dinosaur Changchunsaurus parvus from the Quantou Formation (Cretaceous: Aptian–Cenomanian) of Jilin Province, north-eastern China. Palaeontology. 2011, 54 (3): 667–683. doi:10.1111/j.1475-4983.2011.01046.x. 
  3. ^ Ohashi, T., and Barrett, P.M. A new ornithischian dinosaur from the Lower Cretaceous Kuwajima Formation of Japan. Journal of Vertebrate Paleontology (Society of Vertebrate Paleontology). 2009, 29 (3): 748-7. doi:10.1671/039.029.0306. 
  • Butler, R.J. The 'fabrosaurid' ornithischian dinosaurs of the Upper Elliot Formation (Lower Jurassic) of South Africa and Lesotho. Zoological Journal of the Linnean Society. 2005, 145 (2): 175-18. 
  • Sereno, P.C. Phylogeny of the bird-hipped dinosaurs (order Ornithischia). National Geographic Research. 1986, 2 (2): 234–56. 

外部連結

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角足龙类
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