閉孔突

闭孔突英語:)是主龍類動物骨盆的一個結構。它是骨盆坐骨的凸起区域[1]。它是附著在股骨上并有助于跑步的肌肉的末端和連接點。这些肌肉在鳄類中被称为外恥坐股肌(M. pubo-ischio-femoralis externus)1和2。 在鸟类中,肌肉被称为外閉孔肌(M. obturatorius lateralis) 和中閉孔肌(M. obturatorius medialis)。它们插入股骨大转子(great trochanter)[2]。與閉孔突相似的另一結構稱為近背突

參考資料

  1. Romer, Alfred S. (1923) "The Pelvic Musculature of Saurischian Dinosaurs" "Bulletin of the American Museum of Natural History" Vol. XLVIII 48:605-617
  2. Hutchinson, John R.(2001) "The evolution of femoral osteology and soft tissues on the line to extant birds (Neornithes)" "Zoological Journal of the Linnean Society" 131:169-197
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