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==Biostratigraphic utility of microfossil groups==
 
==Biostratigraphic utility of microfossil groups==
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Ch17chart1.png|{{figure number|1}}Geologic periods in which various microfossil groups existed and those periods for which the groups are most useful for dating.
 
Ch17chart1.png|{{figure number|1}}Geologic periods in which various microfossil groups existed and those periods for which the groups are most useful for dating.
 
applied-paleontology_fig17-13.png|{{figure number|2}}Paleoenvironments of various microfossil groups.
 
applied-paleontology_fig17-13.png|{{figure number|2}}Paleoenvironments of various microfossil groups.

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