The present study showed a descriptive anatomical study of the parts of the axial skeleton in the ostrich (Struthio camelus) in addition to a morphometric study of each bone. We studied 7 male ostriches aged from 1 to 3 years with an average weight of 120.00 kg. The cranium exhibited two vast orbits supported by a sclerotic ring. Hyoid apparatus was fine delicate horseshoe-shaped and comprised Basihyale, Urohyale, and Cornu branchiale. Cornu branchiale were paired and long rod-shaped, consisting of a proximal bony part Ceratobranchiale and slightly curved distal cartilaginous process, the Epibranchiale located on either side of the hyoid apparatus. The whole vertebral column comprised 54 vertebrae, including 18 cervical vertebrae, 7 separated thoracic vertebrae, a synsacrum, and 9 separated caudal vertebrae. Atlas had a butterfly-shape with a narrow width and large vertebral foramen. Axis had a protruded dens with a rounded tip that arose from the cranial surface of the body for articulation with the Incisura fossae of atlas. Several Pneumatic foramina were found in the cervical vertebrae. The transverse foramen was found in all the cervical vertebrae except atlas. The ribs were nine pairs in number, the sternal ribs extended from the third to the seventh rib while the rest were asternal floating ribs. The sternum was a broad quadrilateral extensive bone, lacking the keel bone. It had dorsally several Pneumatic foramina.

本研究除了对每块骨头进行形态测量研究外，还对鸵鸟（Struthiocamelus）的中轴骨骼部分进行了描述性解剖学研究。我们研究了7只1至3岁的雄性鸵鸟，平均体重为120.00公斤。颅骨有两个由硬化环支撑的巨大轨道。舌骨器呈精致的马蹄形，由基底舌骨、尾舌骨和鳃角组成。鳃角成对呈长棒状，由近端骨部角鳃节和稍弯曲的远端软骨突组成，上鳃节位于舌骨器两侧。整个脊柱由54块椎骨组成，其中颈椎18块，分离的胸椎7块，合骶骨和9块分离的尾椎。阿特拉斯呈蝴蝶状，宽度较窄，椎孔较大。轴有一个突出的凹穴，其尖端呈圆形，从身体的颅表面伸出，与寰椎切迹窝接合。在颈椎中发现了几个气孔。除寰椎外，所有颈椎均有横孔。肋骨有九对，胸骨肋骨从第三肋骨延伸到第七肋骨，其余为胸骨浮肋。胸骨是宽阔的四边形广泛骨，缺乏龙骨。它的背部有几个充气孔。