DEVONIAN SYSTEM: PLATEAU LIMESTONE. 



Padaukpin Fauna. 



ASIA. 



N. America. 



Australia. 



Remarks. 



Western. 



Central. 



Eastern. 



Armenia. 



.25 



u 



CD 



P4 



Hindu Kush. 



Turkestan. 



Tian Shan. 



Kuen Lun. 



Siberia. 



Se Tchouan. 



Yunnan. 



Kwang-si. 















X 



























X 























X 





X 









?X 























X 





?X 





cf. C. helianthoid.es 



























Up. Calceola stage. 



















X 































X 































aff. C. aquisyranenst 



























Freeh. Up. Dev. 



























Germany. 



