PALEOBIOGEOGRArHY OF THE MARINE REALM 



193 



Jurassic 



Cretaceous 



Larger black patches = salt deposits 

 Round black spots = other evaporite beds 

 Stippled area = inferred evaporite belt 



\ olternative trends, 

 I I ' Cambrian through 



V, y Carboniferous 



( 



Quaternary 



Fig. 12. Distribution of evaporites in the Northern Hemisphere for the geologic 

 periods since the Pre-Cambrian (rearranged and slightly modified after Lotze, 

 1957, pp. 192-193, Figs. 77-86). 



