SILURIAN SYSTEM : NAMHSIM STAGE. 



Lower Namhsim Fauna — contd. 





Horizon and 



Distribution of Species or nearest Ally. 





Nearest Allies. | 



N. Europe. 



Great Bri- 

 tain. 



Bohemia. 



N. America. 



Himalaya. 



C e n t r a 1 

 China, 



Australia. 



Remarks 



C Trochus heli- 

 cites, Sow. 





U. Lw. 















1 



i T. acutus 



Lindst. 

 j (?) Euom- 



phalus sp. 



Lw. 











?L. Ly. 





Kian-tshang- 

 pa (Kayser). 



— 



. . 



Lw. 

 Cc.-Ly. 















Pr. Fletcheri 

 Salter. 





Wk.-Lw 















1 



Wk. 



Cc.-Lw. 



Wk-Lw 



Cc.-Wk. 







U. Ly. 



N. S. Wales. 







Cc-Lw. 















Ch. vinculum 

 Barr. 



1%. longicau- 

 datus March. 



i 





Wk.-Lw. 



Cc. 

 Wk. 



1 







U. Sfl. 



Victoria. 



