STRATIGRAPHY 



577 



SPECIES. 



Pteria ohioense (Herrick) 



Monopteria marian White 



Pseudomonotis equistriata (Beede) . . . . 



Myalina perniformis Cox 



Myalina suhquadrata Shumard 



Myalina swallowi McChesney 



Schizodus affinis Herrick 



Schizodus cuneatus Meek ? 



Schizodus ulrichi Worthen 



AviculipectenmecoyiM.eekandHayden. 



Aviculipecten pellucidus Meek and 

 Worthen 



Aviculipecten rectilaterarius (Cox). . . . 



Acanthopecten carboniferus (Stevens). 



Deltopenten occidentalis (Shumard) . . . 



Lima retifera Shumard 



Modiola ? subelliptica Meek 



Allerisma terminale Hall 



Astartella concentrica (Conrad) 



Pleurophorella papulosa Girty 



Pleurophorus sp. nov 



Pleurophorus tropidophorus Meek . . . . 



Pleurophorus tropidophorus afF. occi- 

 dentalis Meek and Hayden 



MoLi^uscA — Gastropoda 



Clavulites howardensis Girty 



Solenospira ? sp. nov 



Pleurotomaria (Orestes) intertexta 

 Meek and Worthen 



Phanerotrema grayvillense (Norwood 

 and Pratten) 



Trepospira depressa (Cox) 



Worthenia tabulata (Conrad) 



Bellerophon crassus var. wewokanus 

 Girty 



Pharkidonotus percarinatus (Conrad) . 



Pharkidonotus percarinatus var. tri- 

 carinatus (Shumard) 



Bucanopsis perlata (Conrad) 



Bucanopsis kansasensis (Shumard) . . . 



Euphemus carbonarius (Cox) 



Patellostium montfortianum (Norwood 

 and Pratten) 



Schizo stoma catilloides (Conrad) 



Naticella ? transversa Beede? 



Bulimorpha nitidula (Meek and Wor- 

 then) 



Sphcerodoma brevis (White) 



MARY- 





PENNSYL- 





WEST 



LAND. 





VANIA. 





VIRGINIA. 



Brush 





















Creek. 



(U 



'V, 



S 



OS 



O 



B 

 < 



O 



m 

 u 



PQ 



Si 



B 

 u 





25 

 B 

 < 



o 



ii3 



bo 



6 



O 



B 

 < 



3 



i 



a 



r 







X 



r 



X 



c 



r 



X 











p 





X 



c 



X 



7 

 ? 







? 



X 

 X 



X 



X 







X 





X 



X 

















c 







c 



c 





c 















c 









X 



X 



X 







c 



X 



c 



c 





X 



r 



a 

 r 



X 







X 



a 



X 



X 



a 



X 



r 







X 

















X 





,> 



c 



X 



X 





X 



X 





c 



a 





r 



a 



a 







X 



a 





X 



r 







r 



r 

















X 







c 



r 











X 





a 



X 







? 

















r 





r 



c 















a 



a 





r 



a 



X 







X 



c 





a 



r 









X 



X 













X 







r 



a 















c 





r 



c 















X 



a 





r 



X 



a 



X 





X 



c 





X 



c 





r 



c 











X 





a 



X 







c 



X 











X 





a 



X 



a 





r 



a 



a 







X 



c 





aa 



a 



r 



r 



a 



a 



X 





X 



X 





aa 



a 





r 



c 



a 



X 





X 



c 





a 



r 























a 





r 



c 



X 



X 







a 





X 



