Download or read book Shapes of Time written by Ken McNamara and published by . This book was released on 1997 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: How did evolution produce specific characteristics, such as the feet of amphibians, or the eye and brain that allow us to read these words? Museum curator Kenneth McNamara delves into the fascinating field of heterochrony to show the errant results when a normal pattern of embryological development is gently nudged off-course. 60 illustrations.