REPORT ON THE VERTEBRATE PALEONTOLOGY OF COLORADO. 



By Edward D. Cope, A. M. 



Philadelphia, July 12, 1874. 

 Sm : I send herewith a report on the stratigraphical relations and 

 vertebrate paleontology of the formations which represent the Creta- 

 ceous, Eocene, Miocene, and Pliocene periods in Colorado, with a few 

 species from other localities added. This essay is based on material 

 collected by myself during a part of the snmmer and autumn of the 

 year 1873, under the auspices of the geological survey of which you 

 are director. This represents the following numbers of species from 

 the respective formations, to which I have added the number from 

 each which is believed to have been first introduced to the knowledge 

 of paleontologists : 



Formation. 



Total. 



New. 



Pliocene ............ ............ ....... . . 



21 



75 

 15 



38 



9 



Miocene -- - -_.- 



59 



Eocene 



.9 



7 



Cretaceous -- -- - -- 



19 









Total 



149 



94 







Hoping that the report will subserve the objects of the survey, I 

 remain, with respect^ 



EDWAED D. COPE, 



Faleontologist. 

 Dr. F. V. Hayden, 



Geologist in Charge, <Sjg 



