Handbook of Paleontology 349 



formation, and the cliff is terminated by the Lockport 

 dolomite. These beds are all more or less richly fossili- 

 ferous. A similar succession of formations is seen in 

 the walls of the gorge of the Genesee river near Roches- 

 ter (figure 46), and east of here the Salina beds appear. 

 In the Niagara river area the Salina beds are covered by 

 drift but are known from borings. In a cement quarry 

 in North Buffalo the Bertie waterlime is at the base and 

 is followed by the Cobleskill (Akron) dolomite, above 

 which the Onondaga limestone lies unconformably. 



In the section in the Kingston area the Cobleskill lime- 

 stone lies unconformably upon the Ordovician shales, 

 followed by the Rondout waterlime and the Manlius, 

 which is succeeded by the coarser-grained Coeymans 

 (Devonian). South of Kingston in the Rosendale area 

 the series of formations below the Cobleskill appear. Im- 

 mediately below is the Rosendale waterlime and under 

 this the Binnewater sandstone and High Falls shale. Be- 

 neath this series lies the Shawangunk conglomerate (of 

 Clinton age) which thickens southward and from Rosen- 

 dale toward the Helderberg region shows a northward 

 overlap. 



The fossils. Characteristic fossils of the Silurian sys- 

 tem of rocks are illustrated in figures 47-49. They are 

 as follows: 



