ORISKANY FAUNA OF BECRAFT MOUNTAIN 

 new tore series continued 



ERA OR SYSTEM 



PERIOD OR GROUP 



AGE OR STAGE 



Ontario 2 



or 

 Siluric 



Oswegan 6 

 (Paleontaric) 



Niagaran 7 

 (Mesontaric) 



Cayugan 8 

 (Neontaric) 



f Oneida conglomerate 



-j Shawangunk grit 



[ Medina sandstone 



f Clinton beds 

 I Rochester shale 

 ! Lockport limestone 

 [ Guelph dolomite 



f Salina beds 



{ Kondout waterlime 18 



( Manlius limestone 19 



Devonic 



"g [ Heldcrbergian 



> 

 3< 



9 



Pu 



"3 



O 

 > 



© ' 



Oriskanian 10 



Ulsterian 1 



3 I 

 £ [Eiian 1 



^ 



o 



SenecaD J 3 



Ciiantauqnan 1 * 



f Coeymans limestone 20 

 i IMew Scotland beds 21 

 i Becraft limestone 22 

 [ Kingston beds- 3 



Oriskany beds 



f Esopus grit 21 

 Schoharie grit 

 Onondaga limestone 



f Haruellus shale 

 I Hamilton beds 



f Tully limestone 

 Genesee shale 

 Portage beds 



(Naples beds, 

 Ithaca beds, 

 Oneonta beds, 



local fades) 



f Chemung beds 



\ (Catskill sandstone 25 



[ local facies) 



1 Chainplainic. This most appropriate designation was introduced by the concur- 

 rence of the four geologists for the formations here assigned to it (exclusive of the 

 Potsdam sandstone), and it has clear right of way over the later application of the name 

 to the period of postglacial alluvium. That the later term has become ingrained in 



