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Cretaceous. — Rocks of this age include sandstones and 

 shales of about the horizon of the Kootenay formation, and 

 contain plant remains and coal seams. Fresh water 

 conditions are indicated, although in the lower pare, salt 

 water deposits are not wanting. Of the plant remains the 

 following have been collected in this locality : — 



Podozamites lanciolatus, Sequoia richenbachii, S. smitti- 

 ana, Oleandra gramniaefolia and Zamites acutipennis. 



Jurassic. — This formation is made up mostly of black 

 shales holding Belemnites. Included in it are two sandstone 

 ribs, the upper with Arctica occidentalis and Nemodon 

 sulcatinus, and the lower, lying practically at the base of 

 the formation, shows remains of Gryphaea planoconvexa, 

 Ostrea strigicula and a species of Terebratulina. 



Triassic and Permian. — Some reddish shales and 

 dolomites resting on yellow to brown shales and quartzites 

 have been referred to these periods, but have not been 

 examined in detail. 



Carboniferous. — In the Banfif section the Carboni- 

 ferous limestone forms a prominent heavy bed. Northward 

 this formation thins considerably, and is here represented 

 by thin bedded limestones, and possibly by some of the 

 quartzitic layers mentioned above. 



Devonian. — The heavy limestone beds, which form the 

 outer mountains, appear to be mostly of this age. Two 

 limestone beds appear, in the upper of which both Devonian 

 and lower Carboniferous fossils occur, but the line of 

 demarcation between these two periods has not been 

 determined. Typical Devonian fossils are plentiful in the 

 lower limestone which forms the block of the top of Roche 

 Miette. 



Silurian. — Shaly beds at the foot of Roche Miette may 

 possibly belong to this age, but no fossils except species 

 of Stromatopora have been found in them. 



Cambrian. — Near the base of the series forming the 

 mass of Roche Miette, a yellow band is exposed near the 

 fault line which separates the lower rocks from the 

 Cretaceous. In this yellow band the following trilobites 

 have been collected: — Crepicephalus iowensis, Ptychoparia 

 affinis and P. wisconsinensis. 



