(from my amazon.com review)
This is the most enjoyable book I've read on evolution since Gould's fine Wonderful Life. Shubin not only combines great skills in paleontology and anatomy with an insatiable curiosity, but he also has a rare gift at writing as well. The book looks at aspects of human anatomy and senses--hands, smell, hearing, vision, etc--and traces them back--way back! Some of this, of course, has been done before, but Shubin writes with a flair, a clarity, and a precision that brings it all into a new focus. There is also an emphasis on DNA, in particular recent DNA experiments that combined with the paleontology and anatomy makes a very compelling case.
Shubin starts off with the search for a link between fish and land animals that took him to the Canadian Arctic and culminated in the discovery of Tiktaalik--a fish with a flattened head and flippers that made it look rather like a very primitive alligator in ways. The author then shows the evolution of necks and limbs. He does the same with some of the organs such as smell and vision, and shows their evolution as well.
The book is perhaps at its best in its discussion of the role of DNA in evolution. It is now known that it is possible to turn on a gene that is responsible for the development of an eye, for example. So you can create a fruitfly with an eye almost anywhere you want--such as on a leg--and many of these are functional, although in a primitive way. But it gets even more interesting. Suppose you take a gene from a mouse that controls the development of an eye, and implant it into a fruitfly, what happens? You get a fruitfly eye, not a mouse eye. This says a lot about the basic building blocks of life.
The book does have one major flaw. At 200 pages it's way too short! If the writing were dry or stiff, 200 pages would be sufficient, but with Shubin's thoroughly enjoyable writing and choice of subjects, I would have preferred 600 pages.