EVIDENCES FROM PALAEONTOLOGY 



75 



C 



IF M 



FIG. 4. Four stages in the evolution of the cameline fore foot. A , Protylopns, 

 Upper Eocene; B, Poebr other ium, Lower Oligocene; C, Procamelus, Upper Miocene; 

 D, guanaco, Recent. (From Scott.) 



