lower tertiary ( synonym found)

Definition of lower tertiary:

°Of or pertaining to the first part of the Cenozoic era when modern flora and mammals appeared.
°The first part of the Cenozoic era when modern flora and mammals appeared.

Definition of lower tertiary:

°Of or pertaining to the first part of the Cenozoic era when modern flora and mammals appeared.
°The first part of the Cenozoic era when modern flora and mammals appeared.

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