GEOLOGICAL CHRONOLOGY OF IME. 



Aflcr Prof. C. A. White. 



InVKU IIIUiA ll'.S. 



Vl'K I KIIKATBS. 



Plants. 



Groi.of;iCAL 



SVSTKMS 

 OR 



Peuious. 



V "O 



i 1 



o 



B 



ra 'iT. 





</> 



12 



3 



•T3 



C 





a " 

 «) 7 ti 



O 



N -a 



u^^C £ S S-53 « "•S.EjJJJiPfS.S 



u 



N 



o 



Modern 



Tertiary 



Cretaceous 



o 



N 



o ■< 



w 



urassic 



Triassic 



/ Permian 



Carboniferous 

 Devonian ... 



o 



N 



o 



< 



Silurian 



Ordovician 



Cambrian 



\ Etch 



enunian 



o 



o 



Huronian 



, 5 Grenvilliau 



rt Archse.'iu 



Note. — It is not supposed that the Geological Periods were of equal lengths, 

 as leprcscnted in the diagram. 



