Question 1

How do you say Pliocene?

Accepted Answer

Pliocene is pronounced PLY-oh-seen. The first syllable rhymes with the word fly, the middle syllable sounds like the letter o, and the last syllable sounds like seen. Put the stress on the very first syllable so it goes PLY-oh-seen. Once you say it a couple of times it feels pretty natural.

Question 2

What does Pliocene mean?

Accepted Answer

Pliocene comes from two Greek words. Pleion means more or greater, and kainos means new or recent. So Pliocene basically means more recent, which is how the geologist who named it, Charles Lyell, described the fossils from this time period compared to older epochs. He noticed that Pliocene fossils looked more similar to living species than fossils from even older rock layers did.

Question 3

When was the Pliocene?

Accepted Answer

The Pliocene Epoch lasted from about 5.33 million years ago to 2.58 million years ago. That makes it roughly 2.75 million years long, which sounds huge but is actually one of the shorter epochs in Earth history. It comes after the Miocene and before the Pleistocene, which is when the great ice ages really kicked in.

Question 4

Were humans alive during the Pliocene?

Accepted Answer

Not modern humans, but our ancient relatives were. Early human ancestors called australopithecines were walking upright in Africa during the Pliocene. The famous fossil skeleton called Lucy, discovered in Ethiopia in 1974, belonged to a species called Australopithecus afarensis that lived about 3.2 million years ago, right in the middle of the Pliocene. Our own genus, Homo, first appeared near the very end of the Pliocene.

Question 5

What animals lived during the Pliocene?

Accepted Answer

The Pliocene was full of incredible mega-animals. Mastodons, giant ground sloths, saber-toothed cats, early mammoths, giant short-faced bears, and massive armored glyptodonts all roamed the land. In the oceans, Megalodon was still around in the early Pliocene before going extinct. Giant terror birds called phorusrhacids also still stalked prey in South America during this time.

Question 6

How warm was the Pliocene?

Accepted Answer

The Pliocene was significantly warmer than today. Average global temperatures were about 2 to 3 degrees Celsius higher than modern times. Sea levels were roughly 25 meters higher as a result, meaning that many of today's coastal areas would have been underwater. The Arctic had forests instead of tundra, and the overall climate was much milder even at high latitudes.

Question 7

What ended the Pliocene?

Accepted Answer

The Pliocene ended about 2.58 million years ago when Earth entered a new pattern of intense ice age cycles. Glaciers began growing across North America, Europe, and Asia in a rhythmic pattern that would repeat dozens of times over the following millions of years. This cooling trend was likely connected to changes in ocean circulation caused by the closing of the Central American Seaway when North and South America joined together.

Question 8

Did Megalodon live in the Pliocene?

Accepted Answer

Yes, Megalodon lived into the early part of the Pliocene but went extinct before the epoch ended. Most scientists place Megalodon's extinction at around 3.6 million years ago, though some estimates range slightly later. This means the biggest shark that ever lived overlapped with some of our early human-like ancestors on the same planet, just in different environments obviously.

Question 9

How is the Pliocene different from the Pleistocene?

Accepted Answer

The Pliocene was generally warmer, with no large permanent ice sheets in the Northern Hemisphere. The Pleistocene, which followed it starting 2.58 million years ago, is defined by repeated massive glaciations where ice sheets advanced deep into North America and Europe. The Pleistocene is also when woolly mammoths, woolly rhinos, and eventually modern humans appeared. The Pliocene was the warm last chapter before the ice ages really took hold.

Question 10

What is the Great American Biotic Interchange?

Accepted Answer

The Great American Biotic Interchange was a massive event during the Pliocene when North and South America connected via the Isthmus of Panama around 3 million years ago. Animals that had been separated for millions of years suddenly had a land bridge to cross. Glyptodonts and giant ground sloths moved north, while horses, tapirs, deer, and big cats moved south. It completely transformed the animal communities on both continents.

Question 11

Who named the Pliocene?

Accepted Answer

The Pliocene was named by the British geologist Sir Charles Lyell in 1833. Lyell is one of the most important figures in the history of geology and is sometimes called the father of modern geology. He named several geological epochs still in use today. He built the word from Greek roots to reflect how modern the fossil species from that time period appeared compared to even older geological layers.

Question 12

Is the Pliocene part of the Ice Age?

Accepted Answer

The Pliocene itself was not yet in a full ice age, though the climate was cooling throughout the epoch. The major ice age cycles that most people picture when they think of woolly mammoths and glaciers belong to the Pleistocene Epoch that came right after the Pliocene. However, some scientists consider the late Pliocene to be the very beginning of the broader Quaternary glaciation period.

Question 13

How long did the Pliocene last?

Accepted Answer

The Pliocene lasted approximately 2.75 million years, from about 5.33 million years ago to 2.58 million years ago. In the grand scale of Earth history, that is a relatively short epoch. For comparison, the Miocene that came before it lasted about 13 million years. But a lot happened in those 2.75 million Pliocene years, including the rise of our earliest walking ancestors and the connection of two entire continents.

Pliocene Pronunciation

What does Pliocene mean?

Name Roots

Fun Facts

Learn More About Pliocene

Related Time Periods