Quaternary

Definition

The most recent period in geologic history, lasting from 2.6 million years ago to present.

Etymology

From Latin 'quaternarius', meaning 'consisting of four', referring to its position as the fourth and final period of the Cenozoic Era.

Example

The Quaternary period is characterized by ice ages and the evolution of modern humans.

Related Terms

• Cenozoic
• Ice Ages
• Pleistocene
• Holocene