Am. Jour. ScL Vol. XXXIV, 



Plate VII. 



Figure 1. — Gular plate of Stegosaurus ungulatus, Marsh ; a, superior view; &, side view; 

 c. inferior view. 



Figure 2. — Caudal plate of same individual; a, side view; b, end view of base ; c, view 

 of opposite side; d, thin margin; e, rugose base; /, and f, surface marked by vas- 

 cular grooves. 



Figure 3. — Dorsal plate of same individual; a, right side; b, thick basal margin; 

 c, left side ; other letters as in last figure. 



All the fiarures are one-twelfth natural size. 



