118 POTTSVILLE FAUNA OF OHIO 



below, measured on Cooney Branch of Brady Creek, Lawrence County, 

 near the Lawrence-Scioto County line, is given to show the relation of 

 the Tionesta coal to the overlying shale: 1 



Feet Inches 

 Shale, hard, dark, tough 12 



Coal 



Bone coal. 

 Coal. _ 



Clay 



Coal 



Clay shale 2 



Tionesta. 



The following section was measured' in the eastern part of Section 

 21, Vernon Township, Scioto County, on Cadot Hill. A few fragments 

 of fossils were obtained from the soft, clay shales overlying the Tionesta 

 coal, which were identified as Orbiculoidea meekana (Whitfield) (Lo- 

 cality 79). 



Feet Inches 



Shale, dark, lower part sparingly fossiliferous, McArthur 4 



Coal, good 1 f 1 2 



Clay > Tionesta 1 1 5 



Coal, good J [ _. 6 



Jackson County. In the southern part of Jackson County near 

 the head of Monroe Hollow, Jefferson Township, the fossiliferous, cal- 

 careous shales of the McArthur horizon can be found at any of the 

 numerous old coal mines of the region. Fossils, which occur in ex- 

 treme abundance, were collected at Monroe Furnace in the northern 

 part of Section 29 (Locality 80). The following geologic section was 

 measured on the farm of John Jaycox, in the western part of Section 

 30, and is typical of the member in that vicinity: 



Feet Inches 



Shale, gray, calcareous, parts very fossiliferous, McArthur 6 



Shale, black, tough 11 



Ccal, good -i r 1 3 



Coal, bony... -[Tionesta... .1 ' 6 



Coal, good. __ 2 



Coal, cannel J I - - 3 



Clay and covered 21 



The fossils collected at Monroe Furnace are listed below: 



Crinoid segments 



Bascomella gigantea n. gen. and n. sp. 



Orbiculoidea meekana (Whitfield) 



'Stout, W., Geol. Surv. Ohio, Fourth Ser., Bull. 20, p. 306, 1916. 



