205 Devonian op Southern Indiana 77 



^Tlatyceras ainmoii Hall x 



Charlestown. 



Platyceras attenuatuni Hall, 6 x 



Madison. 



Platyceras buculentum H x 



Rare. Clark county (Nettleroth), Kent, 

 Ind. 



^Platyceras carinatum Hall x 



Charlestown and Falls of the Ohio, 

 Scipio, Ind., Bear Grass creek, lyouisville. 



Platyceras compressum Nettleroth x 



Falls of the Ohio (Nettleroth). 



*Plat3xeras conicum Hall x 



Falls of the Ohio (Nettleroth). 



Platyceras crassum Hall? x 



Rare. Kent, Ind. 



^Platyceras cymbium Hall x 



Charlestown. 



-•Tlatyceras dumosum Conrad x 



Clark and Jennings counties (Nettle- 

 roth), Falls of the Ohio, Bear Grass creek, 

 Louisville. 



^Platyceras dumosum var. rarispinum Hall x 

 Falls of the Ohio. 



-■'Platyceras echinatum Hall x 



Clark county (Nettleroth), Bear Grass 

 creek, Louisville. 



^Platyceras ere(ftum Hall x 



Charlestown (Nettleroth), Lancaster, 

 Kent, and Lexington, Ind. 



Platyceras (Orthonychia) flu(5luosum Ul- 



rich X 



Falls of the Ohio (Ulrich). 



^Platy ceras haliotoides M . and W 



Rock ford. 



