Below are electronic files of articles and figures from the book The Timetree of Life, and a wall poster.  These resources are copyrighted and are provided here for personal, research, or educational use. Commercial use is prohibited. Link to this page if you wish to make a file available to someone or to post on a web site. Requests to reproduce individual photographs should be directed to the owner or photographer, indicated in the photo credit. Requests to reproduce other figures in the book (e.g., timetrees) should be directed to Oxford University Press. Other questions should be directed to the editors. See also RESOURCES for other information on molecular clocks, methodology, and links to related web resources for the tree of life and timetree of life.