Figure 12. 3D reconstruction of intermediate expansion of pneumatic diverticula around some cranial cervical vertebrae of Brachiosaurus, pneumatic diverticula are simplified and without subdivisions, pneumatic ducts connecting the diverticula are purely hypothetical. Note that around the pneumatic diverticula, there is space on the neural spines for the insertion of large ligaments. 12.1. 3 cervical vertebrae of Brachiosaurus in left lateral view; 12.2. animated movie of 4th cervical vertebra of Brachiosaurus.

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