EPICONTINENTAL SEA OF JURASSIC AGE 259 
rather than the Jura. But the Jurassic age of these beds 
is now sufficiently well established not to require further dis- 
cussion. 
Not only is this fauna represented in the islands just men- 
tioned, but it occurs also on the continent at some considerable 
distance inland. From fossils collected by G. M. Dawson on the 
Iltasyouco River in British Columbia about Parallel 53° and 
Longitude 126° West, Whiteaves" recognized the following spe- 
cies: Pleuromya subcompressa Mk.; Pleuromya levigata Whiteav.; 
Astarte packardi White; Trigonia dawsont Whiteav.; Modiola for- 
mosa M. & H.; Gervillea montanaensis Mk.; Gryphea calceola var. 
nebrascensis M. & H.; Grammatodon inornatus Whiteav.; Oleoste- 
phanus loganianus Whiteav. 
These fossils were found in the felsites and porphyrites of 
the metamorphic rocks lying east of the Coast Range. They 
contain species common to both the Queen Charlotte and the 
Interior faunas. 
From fossils collected by G. M. Dawson at Nicola Lake in 
British Columbia Hyatt? determined the Jurassic age of certain 
beds in that region lying above the Triassic. The fossils col- 
lected are: Rhynchonella gnathophoria?; Pecten acutiplicatus Gabb ; 
Entolum sp. Hyatt; Lama parva Hyatt. 
Just north of Parallel 51°, near the east end of Devil’s Lake, 
which is situated on the eastern border of the Front Range of 
the Rockies, McConnell3 found an outlier of Jurassic which 
contained the following fossils: Avicula (Oxytoma) mucronata; 
Trigonia intermedia; Trigonarca tumida, Lerebratula, Ostrea, Camp- 
tonectes, Lima, Cyprina, Ammonites, and Lelemnites. This locality 
serves as a connecting link between the Montana area and the 
localities to the west, as it is situated midway between the two. 
The above-named group of fossils contains one species and a 
number of genera common to the Interior and the Pacific Coast 
deposits. 
SEOG Git 
2 Rept. of Geol. Surv., Canada, 1894, p. 51. 
3 Rept. of Geol. Surv. Canada, 1896, p. 17d. 
