Furculum. Pl. XII., figs. 2 and 3.
The clavicles are completely joined into a smooth, slightly-compressed furculum, like that of the goose, except that the antero-posterior curvature is confined to the articular processes, which diverge 1 inch above the general
plane, and are expanded with a large pneumatic foramen (a) on the external surface, overhanging which is a triangular articular surface (b). The coracoids have not been found, but must have been stout triangular bones 2 inches in length and 1 ½ inches wide at the sternal attachment. The scapula also is missing.