STRATIGRAPHY OP FOSSILIFEROUS MEMBERS 115 



Orbiculoidea missouriensis (Shumard) 



Crania modesta White and St. John 



Derby a crassa (Meek and Hay den) 



Chcnetes mesolobus Norwood and Pratten 



Productus cora d'Orbigny 



Productus semireticulatus (Martin) 



Productus semireticulatus (Martin) var. 



Pustula nebraskensis (Owen) 



Pustula punctatus (Martin) 



Pustula symmetricus (McChesney) 



Marginifera muricata var. missouriensis Girty 



Marginifera wabashensis (Norwood and Pratten) 



Spiriferina kentuckyensis (Shumard) 



Spirifer bocnensis Swallow ? 



Spirifer camera tus Morton 



Spirifer opimus Hall 



Squamularia perplexa (McChesney) 



Composita subtilita (Hall) 



Composita sp. 



Prothyris elegans Meek 



Edmondia ovata Meek and Worthen 



Parallelodon carbonarius (Cox) 



Parallelodon sangamonensis (Worthen) 



Parallelodon tenuistriatus (Meek and Worthen) 



Myalina pernaformis Cox 



Schizodus wheeleri Swallow 



Aviculopecten coxanus Meek and Worthen 



Deltopecten scalaris (Herrick) 



Acanthopecten carboniferous (Stevens) 



Crenipecten foerstii Herrick 



Euchondria neglecta (Geinitz) 



Entolium aviculatus (Swallow) 



Pleurophorus tropidophorus Meek 



Astartella concentrica (Conrad) 



Astartella varica McChesney 



Pleurotomaria sp. 



Naticopsis nanus (Meek and Worthen) 

 Bulimorpha inornata (Meek and Worthen) ? 

 Sphaerodoma brevis (White) 

 Sphaerodoma ventricosa (Hall) 

 Sphaerodoma sp. 



Conularia crustula White ? 

 Orthoceras isogramma Meek 

 Phillipsia trinucleata Herrick 



