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Definitions from the Web

Quarternary

Noun

• Sense: The fourth and final period of the Cenozoic Era, following the Tertiary period and preceding the present time, characterized by the spread of humans and the Quaternary glaciations.
• Usage: The quarternary is an essential era for understanding the evolution of human beings.

Adjective

• Sense: Relating to or denoting the present period of the Cenozoic Era, including the Holocene and Pleistocene epochs.
• Usage: The quarternary deposits contain valuable information about climate change.

Related Products on Amazon:

• Books on Quarternary Era
• Books on Human Evolution
• Books on Climate Change