42 POTTSVILLE FAUNA OF OHIO 



Composita subtilita (Hall) 

 Composita sp. 



Edmondia sp. 



Parallelodon tenuistriatus (Meek and Worthen) 



Myalina pernaformis Cox 



Schizodus curtus Meek and Worthen 



Aviculopecten coxanus Meek and Worthen 



Deltopecten occidentalis (Shumard) 



Crenipecten foerstii Herrick 



In the exposures along the Wheeling & Lake Erie Railroad, just 

 north of Rock Cut, Muskingum Township, the Boggs limestone is 

 flinty, dark in color, with abundant fossils. The relations of the Boggs, 

 Lower Mercer, and Upper Mercer limestones are exceptionally well 

 shown at this locality, and collections were made from all three mem- 

 bers (Locality 28). 



Section along the Wheeling & Lake, Erie Railroad, just north of Rock Cut, 

 Muskingum Township, Muskingum County 



Feet Inches 



Shale - 5 



Flint, black, fossiliferous, Upper Mercer 2 



' Coal, with shale bands__ 1 Bedford / -- 8 



Coal, somewhat bony / \ 2 4 



Clay, siliceous '__ N - 1 6 



Sandstone, part shaly _ 7 



Sandstone, shaly 5 



Shale., 1 



Limestone, shaly, fossiliferous 1 1 6 



Limestone, hard, fossiliferous > Low&r Mercer J i 



Limestone, hard, fossiliferous J L 1 10 



Shale, dark _._ 4 



Shale, with bony coal \ Middle Mercer. _ _ / - - 6 



Coal, bony J I 1 3 



Clay 4 



Shale, dark gray, siliceous 6 



Limestone, flinty, dark, fossiliferous, Boggs __ , 18 



Coal, Lower Mercer __ 8 



Clay, light, siliceous 3 



The list of fossils which were collected from the Boggs limestone 

 along the railroad cut is given below: 



Crinoid segments * 



" Fenestella shumardi Prout? 

 Septopora biserialis (Swallow) 



Chonetes choteauensis Mather 

 Productus cora d'Orbigny 

 Productus semireticulatus (Martin) 



