Eocene Epoch. Eocene Epoch, second of three major worldwide divisions of the Paleogene Period (66 million to 23 million years ago) that began 56 million years ago and ended 33.9 million years ago. It follows the Paleocene Epoch and precedes the Oligocene Epoch. The Eocene is often divided into Early (56 million to 47.8 million years ago), Middle (47.8 million to 38 million years ago), and Late (38 million to 33.9 million years ago) epochs.
digress - lose clarity or turn aside especially from the main subject of attention or course of argument in writing, thinking, or speaking; She always digresses when telling a story; her mind wanders; Don't digress when you give a lecture.
(transitive; often foll by out or up) to obtain by digging: to dig potatoes, to dig up treasure 5. (transitive; often foll by out or up) to find or discover by effort or searching: to dig out unexpected facts