81 



Pterospermites sp. 



Bib: Geol. Surv. Can., 1871^72, 59. 



In 1871 Sir William Bawson recorded a species of Plerospermites from the Quesnel river, 

 but was not able to assign a specific name. 



Pterospermites dentatus, Heer. 



Bib : Trans. R.S.C., I, 1882-83, iv, 33 ; VII, 1889, iv, 69 : Brit. N. A. Bound. Comm., 1875, 

 App. A., 831 : Flor. Foss. Arct., 1, 1868, 188 : Proc. U.S. Nat. Mus., X, 1887, 45. 



Dawson gi\res only a reference to this plant as determined by Heer to be a constituent 

 of the Mackenzie River flora. It has been noted by Lesquereux as occurring in the Upper 

 Kanab valley, Utah. 



Pterospermites cupanioides,( Newb.) Knowlton. 



Bib : Trans. R.S.C, IV, 1886: Proc. U.S. ISTat. Mus., XVf, 1893, 35 : Lat. Ex. Fl., 1868, 

 74 : U.S. Geol. Surv., Bull. 37, 1887, 94. 



l^ewberry's only record for this species is in the Fort Union group at Glendive ? Montana. 

 The Lignite Tertiary of Porcupine creek is the only locality so far recorded for Canada. 



Pterospermites spectabilis, Heer. 



Bib : Trans. R.S.C, I, 1882-83, iv, 33 ; VII, 1889, iv, 69 : Flor. Foss. Arct., II, iv, 480 : Proc. 



U.S. Nat. Mus., XI, 1888, 27. 



Dawson's reference to this species is a citation of Heer's account of its occurrence in the 

 Tertiary beds of the Mackenzie river. Lesquereux also records it from the Miocene of 

 Spanish peak, California. 



Pyrus sp. 

 Bib: Geol. Surv. Can , 1877-78, 186 B. 



Reference is made by Sir WiMiam Dawson to a kaf of the mountain ash, obtained from 

 Coal gully in 187 7. No similar leaves appear to have been obtained from any locality in the 

 United States; but in the collections of Lambe from the Horsefly river in 1906 there is a' 

 single leaflet which apparently belongs to the same species as Sir William Dawson's specimen. 



Quercus sp. 



Bib: U. S. Geol. Surv., Bull. 204, 1902, 53, pi. VIII, f. 3 : Geol. Surv. Can., 1871-72, 59; 

 1875-76; 1879-80; 1887, 136 E : VII, 1894, 36, 37 C: Trans. R.S.C., IV, 1886; 

 VIII, 1890. 



In the 1906 collection from the Horsefly river there were some incomplete leaves of an 

 oak which could not be determined specifically, but which appeared to be the same as a 

 species from Van Home's ranch, representing the Upper Miocene of the John Day basin in 

 Oregon, but this could not be determined with sufficient certainty. 



9197—1.1 



