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tertiary crusher definition biology definition

2020114ensp enspTertiary Period former official interval of geologic time lasting from approximately 66 million to 26 million years ago It is the traditional name for the first of two periods in the Cenozoic Era 66 million years ago to the present the second is the Quaternary Period 26 million years ago to the present The Tertiary has five principal subdivisions called epochs which from oldest to