BUFFALO SOCIETY OF NATURAL SCIENCES 



35 



The Conodont bed is concretionary and irregular in its 

 bedding. At some exposures it is absent altogether. Its surface 

 undulates and the resulting hollows are filled with thin laminae 

 of shale. Newly fractured surfaces show a coarsely crystalline 

 structure, and weathered surfaces are rough owing to the 

 weathering out of the tiny fossils which make up the bulk of the 

 mass. 



A 



C 



D 







F. Houghton, Photo. 



Fig. 14. Cliff at railway bridges, Eighteen Mile creek, Lake View, showing 



A. Cashaqua shale. 



B. Middlesex shale. 



C. West river shale. 



D. Genundewa limestone, which forms the bed of the creek at 

 this point. 



Included in the Genundewa limestone is a band of dark shale 

 and thin limestone layers totalling in all twelve inches thick. 

 This lies immediately above and in contact with the Styliola 

 layer. 



