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NEW YORK STATE MUSEUM 



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DISTRIBUTION OF FOSSILS IN THE SILURIC BEDS 



Syjiopsis of strata: 



Medina i Upper Medina sandstones and shales 



2 Clinton lower shale 



3 Clinton lower limestone (mainly 



lowest 4 feet) 

 Clinton beds ] 4 Clinton upper limestone (crystalline) 



5 Top beds of Clinton limestone 



6 Clinton lens. Niagara gorge 

 [ 7 Clinton lens. R. W. & O. railroad 



8 Lowest foot of shale 



9 Shale 3 feet above Clinton limestone 



10 Shale 4 feet above Clinton limestone 



11 Shale 5 feet above CHnton limestone 

 Lower shale '■{ 12 Shale 6 to 8 feet above Clinton lime- 

 stone 



13 Shale 19 feet above Clinton limestone 



14 Shale 25 feet above Clinton limestone 

 [ 15 Bryozoa beds 



Upper shale 16 Upper shales 



17 Lockport limestones 



18 Waterlime, Buffalo 



19 Manlius limestone 



