'GEOLOGICAL AND NATURAL HISTOEY SURVEYOF CANADA. 



CONTRIBUTIONS TO CANADIAN PAL^ON TOLOGY. 



VOLUME I. 



BY J. F. WIIITEAVES- 



1. Eeport on the Inrertebrata of the Laramie and Cretaceous rocks of the 

 vicinity of the Bow and Belly Rivers and adjacent localities in the 

 JVorth- West Territory. 



The present paper is intended primarily as a paloeontological supple- 

 ment or appendix to Dr. G. M. Dawson's " Eeport on the Region in 

 the Vicinitj' of the Bow and Belly Elvers," published in 18S5 in the 

 "Eeport of Progress" of the Survey for 1882-83-84. It is mainly 

 based upon collections made by Dr. Dawson and 3Iessrs. E. G. McCon- 

 nell, J. B. Tyrrell and T. C. Weston in the yeai-s 1881-84, but in order 

 to make it as complete a presentation as possible of the present state of 

 our knowledge of the invertebrate fauna of the Laramie and Cretace- 

 ous rocks of the Canadian North-West, it contains also a revision of 

 the s^Decies from these formations obtained by Dr. Dawson in 1874 in 

 his capacity of Geologist to H. M. I^orth American Boundary Com- 

 mission, and identifications of a few Cretaceous fossils collected by 

 Prof. Macoun in 1870. 



Dr. Dawson's Eeport, in the volume referred to, contains several 

 short lists of fossils, but these as there stated " are to be regarded as 

 j)rovisional only," and may be considered as superseded by the present 

 paper. 



The species are enumerated or described, as the case may be, in a 

 stratigraphical and descending order corresponding as nearly as 

 possible to the grouping and nomenclature in Dr. Dawson's Eeport. 

 The only exceptions to this mode of arrangement occur in the case of 

 a few of the specimens from the Laramie basin north of the typical 

 region near the Belly Eiver. In this northern part of the basin it has 

 so far been impossible to correlate the sub-divisions of the Laramie 

 with those of the Belly Eiver and vicinity. 



The writer desires to acknowledge his obligations to Dr. C. A, 

 White, of the Smithsonian Institute, Washington, for a direct compari- 

 son of a number of Canadian specimens with the types of several of his 

 own and of Mr. Meek's species in the museum of that institution, and 

 i'or various and valuable critical suggestions. 



June, 1885. 1 



