PLATE ecu 



Second and Tenth Left Ribs of the Type of Brontops robustus Marsh 



Plate prepared under the direction of Professor Marsh. One-fourth natural size. (See p. 667) 



1, Second rib, outer view; 2, the same, anterior; 2a, the same, proximal end; 3, the same, inner view; 4, the same, posterior view; 

 4a, the same, distal view; 5, tenth rib, anterior view; 5a, the same, proximal end, dorsal view; 5b, the same, proximal end, 

 antero-internal view; 5c, the same, distal view; 6, the same, posterior view; 6a, the same, internal view; 6b, the same, distal 

 end, internal view. 



