In the geologic time scale a unit of time lessthan an era and greater than an epoch. Example: The Tertiary periodwas the earliest period in the Cenozoic era and included, among others,the Eocene epoch.
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In the geologic time scale a unit of time lessthan an era and greater than an epoch. Example: The Tertiary periodwas the earliest period in the Cenozoic era and included, among others,the Eocene epoch.