306 Clara Gould Mark 



cer limestone at Fultonham, though it is more nearly black and 

 contains some flint. When weathered it becomes shaly, and more 

 closely resembles the limestone at Fhnt Ridge and Bald Knob; 

 and it contains the same fossils as the limestone at those local- 

 ities. 



The entire list of fossils collected from the Mercer limestone at 

 all of the exposures studied is as follows: 



Lophophyllum -profundum (Milne-Edwards and Haime) 



Fenestella shumardi Prout 

 Septopora rectistyla Whitfield 

 Septopora biserialis Swallow 

 Prismopora sereata Meek 

 Rhomhopora lepidodendroides Meek 



Glossina waverlyensis Herrick 

 Orbiculoidea convexa (Shumard) 

 Orbiculoidea missouriensis Shumard 

 Orthothetes crassus (Meek and Hayden) 

 Chonetes mesolohus Norwood and Pratten 

 Productus semireticulatus (Martin) 

 Produdus cora d'Orbigny 

 Productus longispinus Sowerby 

 Productus nehraskensis Owen 

 Rhipidomdla pecosi (Marcou) 

 Dielasma cf . turgidum (Hall) 

 Spiriferina kentuckiensis (Shumard) 

 Spirifer camaratus Morton 

 Spirifer rockymontanus Marcou 

 Reticularia perplexa (McChesney) 

 Seminula argentea (Shepard) 



Solenomya radiata Meek and Worthen 

 Solenomya anodontoides Meek 

 Prothyris elegans Meek 

 Edmondia cf. aspinwallensis Meek 

 Edmondia ovata Meek and Worthen 

 Edmondia reflexa Meek 

 Edmondia nebrascensis Geinitz 



