QUATERNARY
Quaternary
The Quaternary Period is the most recent of the three periods of the Cenozoic Era in the geologic time scale of the ICS. It follows the Neogene Period and spans from 2.588 ± 0.005 million years ago to the present.The above text is a snippet from Wikipedia: Quaternary
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quaternary
Adjective
- Of fourth rank or order.
- Of a mathematical expression containing e.g. x4.
The above text is a snippet from Wiktionary: quaternary
and as such is available under the Creative Commons Attribution/Share-Alike License.