178 



THE CERATOPSIA. 



He says, further: 



In this year, however, it was found that the best results were obtained in the Belly River series in the vicinity of Berry 

 Creek. Accordingly this locality was revisited in 189S and again in 1901 and collections made from the Belly River series 

 only, in an extensive area of "badlands" on either side of Red Deer River between Berry Creek and Dead Lodge Canyon. 



This locality is in Alberta, just west of the border between that Province and Assiniboia. 

 In speaking of the Belly River series Dr. G. M. Dawson" says: 



In the region of the Bow and Belly rivers the Pierre is underlaid by an extensive fresh and brackish water series, consisting 

 of sandy argillites and sandstones; the upper portion is characteristically pale in tint, the lower generally darker and yellowish 

 or brownish. This has been called the Belly River series and appears to correspond precisely to that occupying a similar 

 stratigraphical position on the Peace River and there designated the Dunvegan series. These indicate the existence of a 

 prolonged interval in the western Cretaceous area, in which the sea was more or less excluded from the region and its place 

 occupied for long periods by lagoons or fresh-water lakes. 



Fig. 123.- 



-View in the valley of Red Deer River, Alberta, upper (primitive mammal) Belly River beds, on east side of the stream south of 



Berry Creek. After Lambe. 



Mr. Lambe, in a letter to the writer dated May 30, 1905, writes: 



All my specimens are from near the mouth of Berry Creek, on the Red Deer River, and the rocks there exposed, I was 

 of the opinion, belonged to the upper or "pale" portion (of Doctor Dawson). * * * On either side of the Red Deer River 

 below the mouth of Berry Creek there is an area of "badlands" about 6 to 8 miles, roughly, in diameter. * * * I camped 

 on the river bank on both sides and obtained all the types in this area. 



In this upper half of the series there is a great similarity in the beds all through, but for convenience of reference in my 

 field notes I refer to further subdivisions which I have named lower, middle, and upper (primitive mammal) beds. The upper 

 photograph in my memoir, b facing page-25 [fig. 122], shows a characteristic view of the lower beds. The other, the lower 

 photograph [fig. 123], is taken from the level of the upper or primitive mammal beds which at this locality [Red Deer River, 

 at and below mouth of Berry Creek] apparently reach the prairie level, which is seen in the photograph as the distant horizontal 

 line. It is from this upper level that I obtained the type of Ptilodus primeevus. 



" Descriptive sketch of the physical geography and geology of the Dominion of Canada, by A. R. C. Selwyn and G. M. Dawson, Montreal,. 

 1884, p. 40. 



fcContr. Canadian Pal., vol. 3 (quarto), pt. 2. 



