THE CRETACEOUS PERIOD 



763 



Fig. 514. Triceratops prorsus Marsh, from the Laramie Cretaceous. (From 

 a painting by C. R. Knight in the U. S. National Museum.) 



Fig. 515. Spoonbill Dinosaurs of the Cretaceous (Hadrosaurus mirabilis 

 Leidy) as interpreted by Knight. (Osborn, Copyrighted by the Am. 

 Mus. of Nat. Hist.) 



