Miocene. Bad Lands. PLATE XL VI 



Figures. 



1-lc. Glyptostrobus Europfflus, var. Uugori, Heer, p. 222. 

 2-13. Populus arctica, Heer, p. 225. 

 14. Populus latior var. trnacata, Al. Br. p. 226. 



