👉 Pleistocene, a period of time during which humans lived on Earth. It began in the late Cretaceous period (about 65 to 70 million years ago) and ended about 10,000 years ago. During this time, many animals and plants became extinct due to changes in climate and environmental factors, but other forms of life continued to evolve. Pleistocenic refers to the fossil record that shows how different species have evolved over millions of
