100 



POTTSVILLE FAUNA OF OHIO 



of the holes which can still be seen along the ridge mark the sites of 

 excavations made for obtaining the flint. The following section was 

 measured at the east end of Flint Ridge along the ravine in the western 

 part of Section 14, and shows excellently the relation of the various 

 members on Flint Ridge: 



Section at the east end of Flint Ridge along the ravine in the western part 

 of Section 14, Hopewell Township, Licking County 



Feet Inches 



A llegheny formation 



Flint, light, f ossilif erous 2 



Covered 1 



Limestone, siliceous, sparingly fos- 



siliferous j- Vanport -| __ 10 



Covered 



Limestone, argillaceous, thin bedded, 



fossiliferous J [15 



Covered..^ 6 



Shale 19 



Limestone, blue, fossiliferous, Putnam Hill 1 2 



Shale. __ 2 



Coal, Brookville __ 1 



Pottsville formation 



Clay, light, siliceous 3 



Sandstone, light, argillaceous 5 



Clay flint, dark. . -} Tionetta^ .'_( ' 



Clay, light _ J I 2 



Covered 5 



Shale _, 2 



Covered 4 



Flint, black, fossiliferous, Upper Mercer 1 



Shale __ 4 



Coal, semi-cannel, Bedford 1 



Other geologic sections along Flint Ridge and elsewhere in Hope- 

 well Township, Muskingum County, which include the Upper Mercer, 

 have been given in the discussions of the' Lowell ville, Boggs, and Lower 

 Mercer members. Fossils were collected from the black flint out- 

 cropping in the roadbed in the extreme northeastern part of the town- 

 ship, east of the Licking River and about one-fourth mile northwest 

 of Sodon School (Locality 66) : 



Fusulina secalica (Say) 



Girtyina ventricosa (Meek and Hay den) 



Crinoid segments 



Derbya crassa (Meek and Hay den) 

 Chonetes mesolobus Norwood and Pratten 

 Productus semireticulatus (Martin) 



