Hierarchy classification:

1. top of the aat hierarchies
2. Styles and Periods Facet
3. Styles and Periods (hierarchy name)
4. [styles, periods, and cultures by general era]
5. geologic time scale
6. Phanerozoic
7. Cenozoic
8. Neogene

Additional parents:

1. top of the aat hierarchies
2. Styles and Periods Facet
3. Styles and Periods
4. styles, periods, and cultures by general era
5. geologic time scale
6. Phanerozoic
7. Cenozoic
8. Tertiary

Anotations

Scope note:

The Miocene is the fourth epoch of the Tertiary period, or the second of the more recently designated Neogene, following Oligocene and preceding Pliocene. It extends from about 23 million to 5 million years ago. The epoch is marked by the expansion of grasslands and the development of modern grazing mammals.