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Extra info for The Jurassic Fernie group in the Canadian Rocky Mountains and foothills
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263, 264) of shales with Lima albertensis McLearn and Entolium leachi McLearn, which are common in the Grassy Mountain Callovian of the southern Alberta foothills. Another Callovian pelecypod in the lower Vanguard formation is Gryphaea nebrascensis Meek and Hayden, which is locally abundant in Callovian beds of Montana. The accurate age of the Shaunavon and other Plains Jurassic formations could be determined by identifiable ammonites, which, unfortunately have not been found. Palxogeography The Callovian sea covered large parts of western Alberta and southern parts of Saskatchewan and Manitoba.
This Seymourites fauna must be regarded as synchronous with the Seymourites beds of the Fernie group. No other Callovian ammonite zones seem to be indicated in the Jurassic of the Queen Charlotte Islands. The Lower Callovian is also present at other localities in British Columbia (Figure 4, column 8). In the Harrison Lake area (Crickmay 1930a, p. 37; 1931, pp. 41, 42) Callovian faunas occur in the Mysterious Creek formation which consists of 2,500 feet of black shale. One fauna, about 1,500 feet above the base, consists of Cadoceras, Paracadoceras, and Pseudocadoceras.
Crickmay, 1931, p. 36). He gave the following reasons for his opinion: (a) The narrow belt in the Gold Ranges of British Columbia and its southern extension into the United States "is indeed entirely without evidence of Jurassic deposits" which "led Schuchert to regard it as permanent land area during Jurassic time" (Crickmay, 1931, p. 36). (b) "Evidence confirming Schuchert's view is to be seen in the coarse clastic deposits which surround the area" (Crickmay, 1931, pp. 36, 37). As far as Canada is concerned Crickmay refers to McLearn's (1916) description of the Jurassic in the Blairmore area and says (loc.