Britannica Sources used in this answer

Pliocene Epoch
A Journey Through Time Since the Precambrian - Paleogene Period: 66 million to 23 million years ago, and Neogene Period: 23 million to 2.6 million years ago

When did the Pliocene Epoch begin and end?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Cenozoic migration routes — Cenozoic Era Principal Cenozoic faunal migration routes and barriers.

The Pliocene Epoch, a major division of the Neogene Period, began approximately 5.3 million years ago and ended about 2.6 million years ago.12