272 Clara Gould Mark 



Orbiculoidea convexa (Shumardj 

 Orbicidoidea misHOuriensis Shumarcl 

 Orthothetes crassus (Meek and Hayden) 

 Chonetes mesolobus Norwood and Pratten 

 Productus cora d'Orbigny 

 Productus longispinus Sowerby 

 Productus n€braske7isis Owen 

 Spiriferina kentuckiensis (Shumard) 

 Spi'rifer camaratus Morton 

 Spirifer rockymontanus Marcou 

 Reticularia perplexa (McChesney) 

 Semimda argentea (Shepard) 



EdiHondia ovata Meek and Worthen 



Edmondia nebrascensis Geinitz 



Nucula beyrichi von Schauroth? 



ParnUelodon tenuistriatus Meek and Worthen 



Parallelodon obsoletus Meek 



Parallelodon sangamonensis 



Myalina swallovi McChesney 



Aviculopeden coxanus Meek and Worthen 



Aviculopecten occidentalis (Shumard) 



Avicidopecten herzeri Meek 



Acanthopeden carboniferus (Stevens) 



Euchondria negleda Geinitz 



Peden {Entolium) avicidatiis (Swallow) 



Lmia retifera Shumard 



Allorisma terminale Hall 



Pleurophorus tropidophorus Meek 



Pleurophorus oblongus Meek 



Cypricardinia carbonaria Meek 



Astarfella vera Hall 



AstarteUa newberryi Meek 



Astartella varka McChesney 



Bucanopsis montfortiana Norwood and Pratten 

 Euomphalus catilloides Conrad 



Phillipsin major Shumard. 



