Muscles of the neck attach to the skull, hyoid bone, clavicles and the sternum. The pectoral girdle was formed by the paired clavicles, interclavical, scapulae, and coracoids. It includes fused clavicles at the anterior end, scapulae (shoulder blades), and large coracoids. Long scapulae are present, whereas the clavicles are absent. Both scapulae and clavicles were of normal and comparable dimensions. The right and left clavicular notches articulate with the right and left clavicles, respectively. The clavicles do not fuse into a furcula. It also indicates that the furcula of birds is derived from clavicles. Joined, furcula-like clavicles have also been found in "Massospondylus", an Early Jurassic sauropodomorph. Other fragments of the pectoral girdle, such as an interclavicle and clavicles, are also preserved. There may be widening of the lower femora and clavicles. The torsos are heavy, and, sometimes, the clavicles are subtly outlined in stone. The clavicles are flat ridges along whole course of shoulders. Clavicles assume an s-shape and lose themselves in shoulders. Clavicles or interclavicles were completely absent.