This major marking on the scapula that articulates with the clavicle?

not sure what your asking? The scapula is in the upper back and articulates with two bones: the humerus and the clavicle. Because the scapula is part of the shoulder joint, the scapula must be mobile to allow the upper extremities freedom of movement. The clavicle articulates with the sternum and the scapula, giving support to the pectoral girdle and adding stability to the shoulder joint. or Coracoid Process?