Nomenclature of Geological Age. 



169 



Mesozoic 



Cretaceous 



Jura-Trias 



Carboniferous • 



Devonian 



I 

 Palteozoic -I Silurian - 



Upper J 

 Silurian | 



Lower f 

 Silurian \ 



Laramie. 



Upper Cretaceous. 



Lower Cretaceous. 



Jurassic. 



Triassic. 



Permian. 

 Coal Measures. 

 Lower Carboniferous 



Carboniferous, 

 Catskill. 

 Chemung. 

 Hamilton. 

 Corniferous. 

 Oriskany. 

 Lower Helderberg. 

 Salina. 

 Niagara. 

 Trenton. 

 Canadian. 



Sub- 



Cauibrian 



Algonkian 



Archean 



r Upper Cambrian. 



J Mirlrllf 



Middle Cambrian. 

 Lower Cambrian. 

 Keweenawan. 

 Upper Huronian. 

 Lower Huronian. 

 Laurentian (Fundamental com 

 plex). 



For New Zealand the provisional table given by Sir James 

 Hector in his " Outline of the Geology of New Zealand " for the 

 Indian and Colonial Exhibition in 1886, was as follows: — 



Table VI. 



Post Tertiary and Recent. 



Pliocene. 



Upper Miocene. 



Lower Miocene. 



Upper Eocene. 



Cretaceo-Tertiary. 



Lower Greensand. 



Jurassic. 



Liassic. 



Triassic. 



