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GEOLOGICAL SURVEY OF CANADA 



2— NEW GENERA AND SfECIES FROM THE BELLY RIVER SERIES 



(MID-CRETACEOUS). 



By Lawrence M. Lambe. 



The present report consists of descriptions or determinations of vertebrate remains, 

 from the Belly River series of the Cretaceous, collected by the writer during the summers 

 of 189*7, 1898 and 1901 in the Red Deer river district. 



The species represented in these collections belong for the most part to the class 

 Reptilia. 



In 189*7, the writer descended Red Deer river, starting from the village of Red 

 Deer, and made collections from the Edmonton subdivision of the Laramie, between 

 Red Deer village and Willow creek, and from the Belly River series between Bull Pound 

 creek and Dead Lodge canon. 



The results of this expedition fully realized the belief of Dr. G-eorge M. Dawson, 

 Director of the Geological Survey, that a systematic collection of the dinosaurian and 

 other reptilian remains, that were known to occur abundantly and in an excellent state 

 of preservation in the rocks of the Edmonton and Bolly River series in the vicinity of 

 Red Deer river would prove to be of scientific value and interest. 



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 

 1898, and again in 1901, and collections made from the Belly River series only, in an 

 extensive area of " bad lands " on either side of Red Deer river between Berry creek 

 and Dead Lodge canon. 



To Dr. G.M. Dawson, Mr. R. G. McConnell and Mr. J. B. Tyrrell principally, belongs 

 the credit of having elucidated the geology of the Cretaceous and Laramie rocks 

 in the region extending from Milk river on the south to north of Red Deer river, in which 

 region the Belly River series has an extensive development, its boundary having been 

 traced for over 150 miles in underlying contact with the Pierre-Fox Hills group, v^ith 

 abundant and conclusive proof of the subordinate position of the former to the latter. 



Mr. J. B. Tyrrell, in his report on the geology of northern Alberta,* divided the 

 rocks of Laramie age, overlying the marine Pierre-Fox Hills group, into a lower and a 



* Geological and Natural History Survey of Canada, Annual Report, new series, vol. II., part E. 1SS6. 

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