The Coelacanth jumped into my mind as soon as I saw Richard Fortey's book. Many years later I was still fascinated by the idea that animals could survive into contemporary times. While this is not a history of evolution Fortey does tell the story in a roughly linear way, and so we begin with very early animals and plants to understand how some examples of these remain alive today.
The first thing to point out is that Fortey never uses the term "living fossil". As he explains, no living thing remains still, a species is in a continuous process of evolution, but with some we can see something very similar to their historical ancestors. Sometimes this is because an organisms "niche" the "place where it fits in, earns a living, reproduces" remains constant and so little change takes place. Quite a few of the organisms in this book are like that, particularly bacteria and so on. Others may have evolved elsewhere but found in radically different environments today. Cacti, Fortey points out "are now specialists for life in arid conditions in the Americas, but did they originate in damp forests in Gondwana?"
As with Fortey's other writings this is highly personalised. His career has taken him to many places to
Fortey ends the book with a discussion of how these creatures in their niches or Time Havens, face the pressures of environmental change. He points out though, that even if catastrophic climate change wipes out the vast majority of living things on Earth, small bacteria will still be there and that "the wheel of life will have turned full circle". It's a great book that gives an unusual insight into evolutionary history.
Fortey - Trilobite!
Fortey - The Earth: An Intimate History