The Link: Uncovering Our Earliest Ancestor （ISBN=9780316070096）

　　For more than a century, scientists have raced to unravel the human family tree and have grappled with its complications. Now, with an astonishing new discovery, everything we thought we knew about primate origins could change. Lying inside a high-security vault, deep within the heart of one of the world's leading natural history museums, is the scientific find of a lifetime - a perfectly fossilized early primate, older than the previously most famous primate fossil, Lucy, by forty-four million years.

　　Colin Tudge is a biologist by education and a writer by inclination--on biology, food and agriculture, and the philosophy of science. His books include The Tree, Feeding People Is Easy, Consider the Birds, and The Time Before History.

FOREWORD
CHAPTER 1 Discovering Ida
CHAPTER 2 Ida's Story Begins
CHAPTER 3 Ida's Eocene World
CHAPTER 4 The Messel Pit
CHAPTER 5 How Primates Became
CHAPTER 6 Primate Evolution
CHAPTER 7 From the Eocene to Us
CHAPTER 8 Who and What Is Ida?
CHAPTER 9 Revealing Ida to the World
EPILOGUE
ACKNOWLEDGMENTS
INDEX