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CAMBRIAN BRACHIOPODA. 



Detailed stratigraphic distribution of Cambrian and Ordovician BrachiopodaA 

 Alabama. 



See Tennessee, Georgia, and Alabama, where the horizons are more or less closely differentiated and correlated, 

 with complete lists of localities and included species. 



Alberta. 



See British Columbia: Mount Bosworth section, where the Alberta localities are shown in their approximate 

 stratigraphic position. 



Arizona. 



One of the Arizona localities (75) has been assigned to the Upper Cambrian; 74b occurs high up in the Tonto 

 group, but has been entered as Middle Cambrian; and the remainder (see index for numbers) occur at various more 

 or less closely related horizons in the "Tonto" sandstone. 



Bohemia. 



o For complete lists of the localities in each State, country, formation, etc., seeinde.x. 



