20 



No. 5 is not richly fossiliferous, but it presents ex- 

 amples of Rafinesquina alternata (Emmons), Opisthoptera 

 sp. and Modiolopsis concentrica, Hall and Whitfield. 



Near the railway bridge the cliff presents a face of 

 about 31 feet (9-4 m.). The lower 17 feet (5-2 m.) consist 

 of sandstones and shales with obscure and fragmentary 

 fossils: these beds, in whole or in part, are to be referred 



Lorraine sandstone and shales, Credit river near Streetsville, Ontario. 



to the Lorraine. The upper 14 feet (4-2 m.) consist of 

 limestone and shale with brachiopods and b yozoa typical 

 of the Richmond. The coral and stromatoporoid zone 

 does not appear at this point, nor is it encountered farther 

 down the river. 



On the east side of the stream, about a half-mile 

 below the railway bridge, a cliff of 25 feet (7 • 6 m.) in 

 height presents exposures of Lorraine limes ones, sha'es 

 and sandstones. Some interesting features of cross bedding 



