Pliocene
Of, pertaining to, or characterizing, the most recent division of the Tertiary age., The Pliocene period or deposits.
Pliocene animals were the animals that were present during the Pliocene Epoch. These animals included wooly mammoths, saber-toothed cats, Titanis birds, Titanotylopus camels, Agriotherium bears, turtles, crocodiles, snakes, and alligators.
The earth during the Pliocene epoch would have looked very similar to how it is today - it was roughly around 6mya. Pangea on the other hand was over 200mya.
The Pliocene epoch ended around 2.6 million years ago with the transition into the Pleistocene epoch due to the onset of significant global cooling and the development of vast ice sheets in the Northern Hemisphere. This period marked the beginning of the Ice Age.
It began forming in the late Pliocene epoch.
pliocene
It's pliohippus
Wikipedia dates it to the late Pliocene, meaning it's over 2.5 million years old, but less than about 3.5 million years old (earlier than that would not be considered "late" Pliocene).
The last epoch in the Tertiary Period is the Pliocene, which lasted from about 5.3 million to 2.6 million years ago. It was a time of cooling global temperatures, the continued evolution of mammals, and the emergence of early human ancestors.
We don't know yet; they haven't happened for us to name them.
It is an active stratovolcano of the Pliocene age, last erupted in 1857