91 
UPPER BLAIRMORE FLORA 
The known upper Blairmore flora contains ferns, cycadophytes, 
conifers, and dicotyledonous angiosperms. Its distribution in the Blair- 
more formation is shown in the following table : 
Fossil lot No. 
DA6 
CH9 
DAS 
CSS 
CS4 
CS3 
Feet below top formation 
O 
CK1 
lO 
O 
QO 
* 
xo 
!>■ 
* 
o 
00 
T— 1 
260* 
Feet above base formation 
1,830 
1,805 
1,770 
1,675* 
1,670* 
1,590* 
A srdp.ninm. dirhsnn.ian.um. TTeer 
Cladophlebis albertsii (Heer) 
— 
— 
Cladophlebis sp. 
* 
Pseudocycas unjiga (Dawson) Berry 
— 
— 
Podozamites latipennis Heer. 
? 
P. stenopus Lesquereux 
— 
.... 
Geinitzia tenneyi Ward (?) 
— 
Sequoia, condita Lesquereux (?) 
; 
Pinus susquaensis Dawson 
— 
— 
— 
Athrotaxopsis or W iddringtonites sp 
— 
Populus berggreni Heer ? 
— 
Ficus ovati folia Berry (?) 
— 
— 
— 
— 
Magnolia alternans Heer (?) 
— 
M enispermiles reniformis Dawson (?) 
Daphnophyllum dakotense Lesquereux 
Sassafras mudgii Lesquereux (?) 
— 
Paliurus ovalis Dawson (?) ........ 
— 
— 
Sapindopsis magnifolia Fontaine. 
*S. belviderensis Berry (?) 
•Estimated. 
Lots DA6 and DA5 are from the top of the formation, below the 
volcanics, on Link creek just above its confluence with Castle river. Here 
the angiosperm flora is as low as 80 feet below the top and the lower Blair- 
more flora in the same section extends as high as 470 feet, i.e. at DA3, 
below the top. A XJnio bed, DA4, lies between, at about 300 feet below 
the top. Lot CH9 is from near the top of the formation (45 feet below) 
in the Ma Butte section and it may be noted that the nearest level in the 
same section from which the lower flora has been collected is 490 feet 
below the top. Lots CS3, 4, and 5 are from York creek just below the 
dam. The exact levels of the fossil lots in section CS are uncertain, owing 
to the concealment of 175 feet of strata between the highest Blairmore 
beds and the lowest Crowsnest volcanics. In the calculations of thick- 
nesses this 175 feet has been credited to the Blairmore formation. The 
levels for CS below the top may be anywhere from 0 to 175 feet too high. 
Thus the known range of this angiosperm flora is from 20 feet below 
the top to 260 or less feet below the top. 
77866— 7 
