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  | isbn    = 0-89181-602-X

  | isbn    = 0-89181-602-X

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Since a species persists only for a limited amount of geologic time and only in a specific environment, microfossils can be used to date the rocks in which they are found (biostratigraphy) and to indicate the environment in which the sediment was deposited (paleoecology).

Since a species persists only for a limited amount of geologic time and only in a specific environment, microfossils can be used to date the rocks in which they are found ([[Biostratigraphic correlation and age determination|biostratigraphy]]) and to indicate the environment in which the sediment was deposited ([[Paleoenvironmental analysis|paleoecology]]).

==Biostratigraphic utility of microfossil groups==

==Biostratigraphic utility of microfossil groups==