PLATE 47 



HUMERUS OF MER YCHIPP US EOPLACIDUS, M. SPHENODUS', M. EOHIPPARION. 

 COMPARISON OF THREE SPECIES FROM THE PAWNEE CREEK BEDS OF NORTHEASTERN COLORADO. 



All figures one-half natural size. 



Merychippiis coplacidus Osborn, type, Am. Mus. 9397. Associated with 



lower jaws and part of skeleton, a, Anterior, b, external views. 

 M. sphenodus Cope, referred specimen, Am. Mus. 8251. Associated with 



teeth and part of skeleton. Same views as 1. 

 M. cohipparion Osborn, type, Am. Mus. 9402 (reversed in drawing). 

 Associated with lower jaws and greater part of skeleton. Same views 

 as 1. 



Pawnee Creek, Col. Middle Miocene 1. 



a u a a a o 



a a u ti a 



316 



