Eocene Epoch, a division of geologic time that began about 54,000,000 years ago and lasted about 17,000,000 years. It is the second epoch of the Tertiary Period. During the Eocene, mammals were the dominant form of animal life. Among them were the ancestors of today's horses, pigs, whales, rats, camels, and monkeys. Reptiles and birds were also common. Plants included elm, maple, beech, and walnut trees.
Over the years, archaeologists have excavated an abundance of important fossils from the La Brea Tar Pits, also known as Rancho La Brea. How knowledgeable are you about this prehistoric place of many a mammoth's demise?
A sculpted mammoth shows visitors to the La Brea Tar Pits what these ancient animals might have looked like, but the pits themselves have looked the same for thousands of years. How did they form, and what discoveries lie beneath the sticky surface?