DEVONIAN SYSTEM: PLATEAU LIMESTONE. 217 



Padaukpin Fauna — continued. 



ASIA. 









Western. 



Central. 



Eastern. 







Remarks. 



Armenia. 



N. Persia- 



Hindu Kush. 



Turkestan. 



Tian Shan. 



Kuen Lun. 



Siberia. 



Se Tchouan. 



Yunnan. 



Kwang-si. 



N. America. 



Australia. 



























afE. F. constricta Hall, 

 Hamilton Group. 



























Hamilton Group. 



























geometrica Hall, 

 Hamilton Group. 



























cf. S. circincta 

 Hall, Up. Helderberg 

 Group. 



























Helderberg Group. 























X 





Hamilton Group. 



Mid. Dev., Devonshire. 



