University of the State of New York 



New York State Museum 



Frederick J. H. Merrill Director 

 John M. Clarke State Paleontologist 



Bulletin 63 

 PALEONTOLOGY 7 



STRATIGRAPHIC AND PALEONTOLOGIC MAP 



OF 



CANANDAIGUA AND NAPLES QUADRANGLES 



INTRODUCTION 



The region covered by these maps is a classical one in the 

 history of New York paleontology. In the days of the original 

 survey of the old fourth district, 1836 to 1843, Prof. James Hall, 

 the district geologist, frequently made headquarters on the 

 beautiful shores of Canandaigua lake and both then and in 

 later years the richly fossiliferous shale beds exposed along the 

 lake shore and in its ravines, afforded to him inexhaustible re- 

 sources for collecting their organic remains. As representative 

 of the strata embraced within the " Hamilton group " no series 

 of exposures in the State has been so thoroughly exploited as 

 these. Canandaigua and its lake, 70 years ago, were easily ac- 

 cessible and so were the numerous villages scattered through 

 northern Ontario county, but about the latter the rock ex- 

 posures have always been few and hard to find because of the 

 great thickness of the drift mantle. Southern Ontario was more 

 remote and though the township of Naples was reached by Hall 

 it was for a brief visit only, and its splendid exposures and in- 

 teresting faunas were left for subsequent researches, 



