286 



GEOLOGICAL SURVEY OF THE TEREITORIES. 



in that part of the country being especially the research and study of 

 vegetable remains, I readily admit the conelusious of these distinguished 

 geologists who had time to attend to details of stratigraphy. As Point 

 of Rocks Station, where the specimens of Ur. Hayden were found, is at 

 a distance of a few miles from the cut end of the ridge east of Salt 

 Wells, the thickness of the measures is there somewhat less, say about 

 three thousand feet. Though it may be, such a heavy series of strata is 

 passed from Black Butte to Point of Eocks that it any part of the so- 

 called Bitter Creek series is Cretaceous, we may expect to find in the 

 fossil plants of this last locality a number of species of Cretaceous types, 

 or at least a distinct modification in the characters of the plants. The 

 thirty species represented by the specimens of Point of Rocks are de- 

 scribed hereafter, but the deductions derivable from the determination 

 of these plants in regard to evidence of geological age, will be more clear- 

 ly understood by a comparative table exposing affinity or identity of 

 characters with species of other localities. The points of comparison 

 are indicated with the flora of the European and of the Arctic Miocene, 

 of the Canadian Tertiary, of the European Eocene, of Golden, Black 

 Butte, and of the Cretaceous in general. 



Table ixposirig the relation of the fossil-plants of 



Point of Rocks. 





Species of fossil-plants from Point of Rocks. 



b 



.2 

 o 



a 

 a 



=! 



3 



o 



6 

 a 



.2 

 S 

 g 



a. 

 2 



.■3 



a 

 < 



a 

 o 



a 



a 

 s 



a. 

 o 

 u 



3 



e 



6 



3 



S 



Oretaceotis. 







An.* 

 An. 



An 































An. 

 An. 











"id.' 



"id. 













"id. 









An. 















An. 







An. 















Id.? 

 Id.! 







.... 





An. 

























An. 

 An. 

 An. 



Id. 



Id. 

































Id. 

















An. 













Id. 

 Id. 































An.. 



"id.' 



Id. 

 Id. 

 Id. 









Id. 



















An. 















An. 























An. 

 Id. 

 Id. 

 Id. 











Id. 













An. 



"id." 









Id. 













An 









An. 





















Id. 



















*An. for analagous ; Id. for identical. 



Of the thirty species enumerated in this table, one is identical with 

 a Canadian species recognized as Tertiary, as seen below, from quota- 

 tions of Prof. G. M. Dawson's Geological Report. Six are identical with 

 and six also analogous to those of the Lower European Miocene, two are 

 identical with, and one allied to, Arctic Miocene species. Six have a 

 close relation to those of the Lower European Eocene, or rather of the 



