Morphological and developmental study on the evolution of the head (especially brain and inner ear) and neck in theropod dinosaurs

兽脚类恐龙头部（特别是大脑和内耳）和颈部进化的形态学和发育研究

• 批准号: 24740351
• 负责人: TSUIHIJI Takanobu
• 金额: $ 2.91万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24740351/
• 关键词: 脳函; 頸椎; 恐竜; 主竜類; 獣脚類; 進化; 脳; ヘテロクロニー

A first, cleared-and-stained specimens of embryos of the American Alligator housed at a museum in the U.S. was observed for sequences of ossification patterns. Furthermore, fertilized eggs of the domestic chickens were incubated and were periodically fixed until immediately before hatching. These specimens were scanned using a CT scanner for obtaining data on ossification sequences. The obtained sequence is consistent with those of other birds published previously. In addition, fossil archosaur specimens ranging from the Late Triassic through Cretaceous in age were observed in museums in the U.S. and Argentina and morphological data on their braincases and necks were obtained. Based on these data, a character data matrix is now in making for analyzing patterns of evolution in these skeletal parts in archosaurs.

第一个，在美国博物馆饲养的美国短吻鳄胚胎的清晰和染色标本被观察到骨化模式的序列。此外，孵育家养鸡的受精卵，并定期固定直至即将孵化。使用CT扫描仪对这些标本进行扫描，以获得骨化序列的数据。所获得的序列与以前发表的其他鸟类的序列一致。此外，在美国和阿根廷的博物馆中观察到了从晚三叠世到白垩纪的化石标本，并获得了它们的头盖骨和颈部的形态数据。基于这些数据，一个特征数据矩阵正在形成，用于分析祖龙这些骨骼部分的进化模式。

项目成果

Reconstruction of muscular and pneumatic systems in the neck and anterior trunk of Abelisauridae: insights from Majungasaurus crenatissimus

阿贝力龙科颈部和前躯干的肌肉和气动系统的重建：来自玛君龙的见解

• 发表时间: 2012
• 作者: Tsuihiji;T.;O’Connor;P. M.
• 通讯作者: P. M.