Chonetes choteauensis Mather 



Productus cora d'Orbigny 



Productus semireticulatu (Martin) 



Pustula nebraskensis (Owen) 



Pustula punctatus (Martin) 



Marginifera muricata var. missouriensis Girty 



Marginifera wabashensis (Norwood and Pratten) 



Spiriferina kentuckyensis (Shumard) 



Spirifer opimus Hall 



Ambocoelia planoconvexa Shumard var. 



Composita subtilita (Hall) 



Edmondia sp. 



Leda bellistriata Stevens 



Parallelodon obsoletus (Meek)? 



Parallelodon sanganonensis (Worthen) 



Posidonia girtyi n.sp. 



Aviculopecten pellucidus Meek and Worthen 



Aviculopecten coxanus Meek and Worthen 



Euchondria neglecta (Geinitz) 



Pleurophorus tropidophorus Meek 



Astartella concentrica (Conrad)? 



Astartella sp. 



Schizostoma catilloides (Conrad) 



Pseudorthoceras knoxense (McChesney) 



Orthoceras n.sp. 



Fish teeth 



BOGGS MEMBER 



Stratigraphy and Extent 



The Boggs member is the next fossiliferous horizon above the 

 Lowellville limestone, and in ascending order forms the second lime- 

 stone of the Pottsville formation. It either directly overlies the Lower 

 Mercer coal (No. 3 coal) or is separated from it by an interval of not 

 more than 3 feet. In Muskingum County it is found about 20 to 

 25 feet above the Lowellville limestone and about 22 feet below the 

 Lower Mercer limestone. In northern Tuscarawas County the latter 

 interval is increased to 34 feet, while at the southern extension in 

 Scioto County the average distance between the Boggs ore and the 

 Lower Mercer limestone is about 47 feet. The horizon has been 

 traced from eastern Scioto, western Lawrence, and Jackson counties 

 on the south, where its appearance is patchy and uncertain, l north- 

 ward through central and western Muskingum County where it 

 attains its greatest thickness. 2 It has also been observed in eastern 

 Licking County, and has been recorded as far north as northern 

 Tuscarawas County. 3 



The Boggs member varies greatly in lithologic character from 

 place to place. In Scioto, Lawrence, and Jackson counties, the 

 horizon is marked only by iron ore irregularly bedded in shales. It 

 is found in isolated patches, and varies in thickness from 1 to 6 feet 



'Stout, W., Geol. Surv. Ohio, Fourth Ser., Bull. 20, pp. 141, 292, 567, 1916. 

 2 Stout, W., Geol. Surv. Ohio, Fourth Ser., Bull. 21, pp. 70-75, 1918. 

 JOrton, Edward, Geol. Surv. Ohio, Vol. V, p. 68, 1884. 



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