ORDOVICIAN SYSTEM : NAUNGKANGYI STAGE. 



109 



Lower Naungkangyi Fauna — concld. 





Horizon and 



Distribution of Species or 

 Nearest Ally. 





Nearest Allies. 



Baltic 

 Provin c e s 

 Russia. 



Sweden. 



Great Bri- 

 tain. 



Bohemia. 



N. America. 



Remarks. 











Cc 





Wk 





fO. thahil Salter 



\ 

 i 



{0. moneta Eichw. . 



Ag 













Cc, Niti Pass. 



f Leptcena Humboldti 

 | de Vern. 



Ag 















1 Orthis pnlygramma 

 J Sow. var. pentlan- 



1 7 " TV 



^ aiea Dav. 









Wk 









Orthisma pyron Eichw. 



L. Lo 















— 



L. Lo 



Ag 







Cc 







Ord., Lunschan, 

 China. 



C C. parvifrons var. 

 s Murchinoni Salter, 

 v. C. nivalis Salter 









Ag 







Cc, Niti Pass. 





Ag 







i 









