The Eocene epoch lasted from about 56 to 34 million years ago and is part of the Paleogene period. It is known for a warm climate that supported lush forests and diverse ecosystems. During this time, mammals began to diversify significantly, with the emergence of early forms of modern groups like whales, horses, and primates. The Eocene also saw the development of many flowering plants, which contributed to the rich biodiversity of the era. Major geological events, such as the formation of the Himalayas, influenced climate patterns and habitats, shaping the evolution of life on Earth during this period.