Pliocene

The Pliocene was epoch of Earth history spanning from 5.3 to 2.5 million BC.

The Pliocene epoch was hotter and wetter than the 21st century, but cooler than the warm period of the previous epoch, the Miocene. Forests still covered much of the planet, but in this epoch they gave way to vast savannahs and grasslands. Sea levels were lower; land bridges linked Alaska to Asia, North and South America joined for the first time, and the Mediterranean was a shallow lake. For the most part, though, the Pliocene wilderness was very similar to the modern world. (PROSE: Prehistory Repeating Itself ^[+]Loading...["Prehistory Repeating Itself (feature)"])

The Pliocene took place at the same time as the Martian Industrial Revolution on Mars. (PROSE: The Dying Days ^[+]Loading...["The Dying Days (novel)"])