STRATIGRAPHY OF FOSSILIFEROUS MEMBERS 41 



Pseudorthoceras knoxense (McChesney) 

 Temnocheilus forbesianus (McChesney) 



In Muskingum Township along Blunt Run, a small stream which 

 flows from the west into Muskingum River,' the Boggs member is a 

 limestone similar in lithologic character and composition to the Lower 

 Mercer. The stratum is extremely fossiliferous and outcrops in the 

 bed of the stream where conditions are especially good for collecting. 

 The section along Blunt Run on land of Carl Crabtree follows (Lo- 

 cality 27) : 



/ 



Section along Blunt Run, Muskingum Township, Muskingum 



County 



Feet Inches 



Limestone, shaly, fossiliferous "i r" 1 



Limestone, hard, fossiliferous. .. 1 I Lower Mercer _ __\ 



Limestone, shaly, fossiliferous 3 



Limestone, hard, fossiliferous J L 1 8 



Shale with coal bands __ 6 



Coal, bony, Middle Mercer _ A 8 



Sandstone __ 10 



Clay, siliceous 1 6 



Sandstone, shaly 4 10 



Shale, dark blue 7 6 



Ore, kidney __ 2 



Shale, dark, siliceous, fossiliferous 1 Boggs.. / 4 



Limestone, dark gray, fossiliferous__ J \ 1 3 



Shale with thin coal bands __ 2 



Clay, light, siliceous 3 



The collection of fossils from Blunt Run includes the following: 



Crinoid segments 



Eupachycrinus mooresi (Whitfield) 



Fenestella shumardi Prout? 

 Rhbmbopora lepidodendroidea Meek 



Orbiculoidea missouriensis (Shumard) 



Derby a crassa (Meek and Hayden) 



Chonetes mesolobus Norwood and Pratten 



Chonetes choteauensis Mather 



Productus cora d'Orbigny 



Productus semireticulatus (Martin) 



Productus semireticulatus (Martin) var. 



Pustula nebraskensis (Owen) 



Pustula punctatus (Martin) 



Marginifera wabashensis (Norwood and Pratten) 



Spiriferina kentuckyensis (Shumard) 



Spirifer boonensis Swallow? 



