DEVONIAN SYSTEM : PLATEAU LIMESTONE. 



Padaukpin Fauna — continued. 



Western. 



ASIA. 



Central. 



-a 



P 

 H 



c 



C 



«8 



C 



a 



- 



X 



Eastern. 



>uan. 



ian. 



°S5 



SeTclK 



c 



Yunr 



M 



X 



X 



Remarks. 



Hamilton Group. 



aff. M. didyma Dalman, 

 ?Dev., Urals. 



Dev., Geissen. Occurs 

 in Altai Mts. 



cf Atrypa serva Barr. 

 Mid. Dev., Devonshire. 



