760 



GEOLOGY 



Fig. 513. A GROUP OF FOSSIL LEAVES OF TYPICAL CRETA<I m - Pi \\r- 

 FROM THE DAKOTA HORIZON, a, Lin'tnlcmlrnn <//>j<inteum Lesq.: l>, 

 Myrica longa Heer; c, Magnolia psemlodciuniruilit Lc.sq.; <L Stfrcnlia 

 mucronata Lesq.; e, Quercus suspecta Lesq.; /, I ' ihurniun incequilaterale 

 I,<^q.; g, Betulites westi, var. snbintegrifolius I^esq.; h, Sassafras snf>in- 

 tegrifolium Lesq.; i, Ficus incequalis Lesq. 



