PLATE CXCIX 



Tenth Dorsal Vertebra op the Type of Brontops robustus Marsh 



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



1, Lateral view, left side; 2, superior view; 3, anterior view; 4, inferior view; 5, posterior view, a, Anterior facet of centrum; n, 

 neural canal; p, posterior facet of centrum; r, facet for capitulum of tenth rib; r', facet for tuberculum of tenth rib; r" , facet 

 for capitulum of eleventh rib; s, neural spine; t, transverse process; z, prezygapophysis; z', postzygapophysis. 



