i] AGE OF FLORAS 



Summary of the horizons of the chief Devonian 

 Plant-bearing beds. 



Upper Devonian: 



Scotland (Upper Old Red) 

 Ireland 



England (Marwood beds) 

 Belgium (Psammites du Condroz) 

 Germany (Hesse-Nassau) 

 Russia 

 Bear Island 

 Ellesmereland 

 Spitzbergen 

 United States 

 ? Canada 

 Australia 



Middle Devonian : 



Scotland (Middle Old Red) 

 Western Norway 

 Bohemia (Etage h 1) 



Lower Devonian : 



Scotland (Lower Old Red) 

 Belgium (Poudingue de Burnot) 

 Norway (Roragen) 

 Spitzbergen 

 Canada (Gaspe) 



