PLATE 2 



Section on Eighteen Mile Creek, showing exposure of the Genesee and lower 

 portion of the Portage. The Conodont bed is absent in this section. 



A, Cashaqua shale \ ^ ^ 



Ti ^,- 1J1 11 r Portage 



B, Middlesex shale J 



C, West River shale 



D, Genundewa limestone )■ Genesee 



E, Genesee shale 



(See text-fig. 2) 



202 



