(£E©IL®(MI(CAIL SWmTET @W CA.KA.DA.. 



DECADE 1.P1.6. 

 LOWER SILURIAN 





Fig. /. Cyclonema HaUiana. 



2 senacaiirLaia ></ 



T, i umbiliatta. 



fi:/ i slrigillata 



I igoda 

 (■ Zoxoncma Murrayana 





