82 The Ottawa Naturalist. [July 



REPORT ON A COLLECTION OF FOSSIL WOODS FROM 

 THE CRETACEOUS OF ALBERTA. 



Bv D. P. Penhallow, D.Sc, F R S C , F.G.S.A. 



Early in the present year, Mr. L. M. Lambe, of the Geological 

 Survey, placed in my hands a specimen of fossil wood for deter- 

 mination. It was without number, but it was described as having 

 been collected by Mr. Milliken from the Edmonton Series of 

 the Red Deer River, 100 miles west of Gleichen, Alberta. 



At a later date, Mr. Lambe sent me six additional specimens 

 for determination. These were all reported as derived from 

 the Judith River (Belly River) Series of the Red Deer River, 

 Alberta. The catalogue numbers on the specimens correspond 

 to the following general description: — 



Nos. 275, 276, 319 and 330 — Silicified woods. 

 No. 838 — Silicified wood not determinable in conse- 

 quence of extended decay and distortion of structure. 

 No. 1676 — A longitudinal section of a cone. 



Picea albertensis, n. sp. 



The specimen numbered 1676, is a longitudinal section of 

 a cone, the basal portion of which has been removed. As found, 

 it measures 38 mm. in its greatest length, and 18 mm. in its greatest 

 width. The upper end is complete, and the general structure 

 is also intact within the limits of the specimen. The basal 

 portion of the cone appears to have been carried away by fracture 

 of the matrix. 



The character of the specimen does not admit of full deter- 

 mination, but the shape immediately suggests comparison with 

 a cone of Picea, while both the size and general outline invite 

 comparison wath P. columbiensis, Penh., recently described as 

 having been obtained by Dr. R. A. Daly from the Tertiary 

 deposits of the Kettle River, B.C.' Measurements of the two 

 cones show that the Alberta specimen is slightly narrower, and 

 that about one-fifth of its length has been removed. The 

 cojrespondence is so close that the two might well be regarded 

 as the same species, but in the absence of external characters, 

 such a correlation would be unsafe, and it seems desirable to 

 designate the cone by a distinctive name, P. albertensis, n. sp. 



CUPRESSOXYLON M ACROCARPOIDES , PeNH. 



Specimens 319 and 330 proved to be fairly well preserved 

 woods of Cupressoxylon macrocarpoides, with which it was pos- 

 sible to compare them without difficulty. 



1. Rept. on Foss. PI. from the Internat. Bound. Surv. for 1903-05. Trans. R.S.C., 

 VIII, 1907, iv. 



