650 A.C. PEALE 
R. G. McConnell and J. B. Tyrrell confirmed Dr. Dawson’s conclusions 
concerning the stratigraphic position of the Belly River series so far as the 
overlying beds were concerned but still left the exact age of the underlying 
formation undetermined. 
They could hardly have done otherwise as their sections in both 
cases did not go to the base of the Belly River series, but in the 
Saskatchewan and Peace River districts Benton shales* were found 
by Dr. G. M. Dawson below the Niobrara, to which latter forma- 
tion Dawson and the other Canadian geologists referred the beds 
afterward relegated to the Belly River series. It was here that 
the Dunvegan sandstones, which lie above the Benton, were named; 
and these Dunvegan sandstones Dawson was always inclined to 
correlate with the Belly River series. The flora of this Dunvegan 
series, which Sir William Dawson says is very nearly akin to that 
of the Dakota group, ‘‘accords with the stratigraphical position 
assigned the beds, namely below the horizon of the Fort Pierre 
Cretaceous.” The following section is given by Osborne on p. 9, 
in Vol. III, Part II, of Contributions to Canadian Paleontology: 
PROVISIONAL CORRELATION 
Fresh water Paskapoo* Ft. Uniont 
(no dinosaurs) 
Brackish and fresh | Edmonton Laramie and Ju- | Triceratops, Toro- 
water dith River saurus; Drypto- 
saurus, Ornitho- 
mimus 
Marine (| Pierre-Fox Fox Hills 
?| Hills Group Fort Pierre 
Fresh and brackish | Belly River Montana exposures| Stereocephalus, 
water in part Monoclonius, 
Ceratops, Tra- 
chodon, Deino- 
Sandy clays and oto feet (Niobrara) don, Ornitho- 
sandstones mimus, Comp- 
semys, Ptilodus 
Ft. Benton Ft. Benton 
Dakota 
* Regarded by Tyrrell as the beginning of the Tertiary. 
j; Mammals of Puerco type discovered by Douglas in 1gor. 
Geol. Surv. Canada, 1879-80, Montreal, 1881, p. 133B. 
2 Tbid., pp. 119-23B. 
