併蹠骨

併蹠骨(英語:是指動物的蹠骨近端被癒合在一起。這一特徵是高度非同源而相似的(homoplastic),在許多適於奔跑的恐龍中都能發現(如暴龍科似鳥龍科和傷齒龍科)。這一結構可以使力量有效傳遞至蹠骨處[1][2]

君王暴龙(左)和異特龍(右)均有併蹠骨的特徵

參考資料

  1. (PDF). [2009-10-24]. (原始内容存档 (PDF)于2011-07-06).
  2. Snively, E. (2000). Functional morphology of the tyrannosaurid arctometatarsus. University of Calgary.
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