Mercer Limestone in Newark-Zanesville Region 287 



Fusulina secalica (Say) 

 Fenestella shumardi Prout 

 Septopora biserialis Swallow 



Orthothetes crassus (Meek and Hayden) 

 Chonetes mesolohus Norwood and Pratten 

 Productus cora d'Orbigny 

 Productus longispinus Sowerby 

 Productus nebraskensis Owen 

 Productus punctatus (Martin) 

 Spirifer camaratus Morton 

 Spirifer rocky tnontanus Marcou 

 Reticularia perplexa (McChesney) 

 Seminula argentea (Shepard) 



Fairview Knob. This hill is a mile and a half from Buzzard 

 Glory Knob, a little west of north, and the road from the Flint 

 Ridge coal mine to the National Pike crosses the hill not far be- 

 low its highest point. The hill is capped by the flint, and on its 

 southern slope the Mercer limestone and several ledges of sand- 

 stone may be seen in the road. The following measurements 

 were made: 



