Quaternary
The Cenozoic era, 65 million years ago to the present, is divided into two periods, the Tertiary and the Quaternary. The Tertiary period, 65 to 2 million years ago, encompasses the rebuildi...
Read more
Quaternary Period
In geologic time, the Quaternary Period (also termed the Anthropogene Period), the second geologic period in the Cenozoic Era, spans the time between roughly 2.6 million years ago (m...
Read more
Quaternary
Quaternary Period