The Pleistocene Epoch was a time period of nearly 2 million years of repeated glaciations throughout the world. This era was known for its megafauna that roamed the Earth during the last great ice age. Although this was a time of mass extinction for species that failed to adapt to climate change, many mammals and vertebrates were found during this period that can be identified today (Zimmermann, 2013). The Pleistocene Epoch represents an important foundation for understanding life that exists today, including carnivores, herbivores, and the evolution of humans. Fossil preservation has always been the most accurate way to determine which species lived during a specific time period. Through correlations and radiometric dating, time periods became more accurate and it became possible to tell what was experienced in those times. Although conditions must be right for fossilization, Pleistocene fossils are widespread and often well preserved. Hundreds of thousands of preserved bones were found in the La Brea tar pits in what is now Los Angeles, giving a good idea of ​​the animals that were present during that time. Many of the preserved animals are animals that can still be found today and would be found in the Los Angeles area if it were not for urbanization. Animals present during this period include camels, mammoths, and saber-toothed cats, among others (Harris and Jefferson, 1985). Below is a picture of a sabertooth fossil found in the La Brea tar pits. The species present were not exclusive to North America, but lived all over the world. During the Pleistocene, saber-toothed cats were present on all continents as very ferocious carnivorous mammals that hunted large herbivores such as mastodons. Like… half of the paper… the editors were well established as creatures capable of surviving harsh climate changes. There were also many flightless birds that did not fare well due to competition for food and water due to glaciation and predators attacking them (Zimmerman, 2013). The Pleistocene Epoch is a well-known time period due to the glorification of the now extinct megafauna as well as the proximity to our current era. Through the rapid climate changes and glaciations that occurred many times during this era, fauna could survive through adaptation or die due to an inability to adapt quickly enough. All different types of animals, carnivorous and herbivorous mammals, birds and reptiles, lived during the Pleistocene Epoch and thanks to preservations like the La Brea Tar Pits, we can observe and study life forms from millions of years ago.