We are indebted to the following specialist reviewers without whose help we could not have accomplished this task: Pierre Adam, Pierre Albrecht, J. Fredrik Bockelie, Gerard C. Bond, Derek E. G. Briggs, Paul Copper, Pierre Courjault-Radé, Mary L. Droser, Richard A. Fortey, Gerd Geyer, Roland Goldring, James W. Hagadorn, Sören Jensen, Viktor E. Khain, Tat'yana N. Kheraskova, Pierre D. Kruse, Ed Landing, John F. Lindsay, Jere H. Lipps, Dorte Mehl, Carl Mendelson, Timothy J. Palmer, Christopher R. C. Paul, John S. Peel, Martin Pickford, Leonid E. Popov, Lars Ramsköld, Robert L. Ripperdan, Philippe Schaeffer, Frederick R. Schram, J. John Sepkoski, Jr., Thomas Servais, Barry D. Webby, Graham L. Williams, Matthew A. Wills, Mark A. Wilson, and Grant M. Young.
We are especially grateful to Françoise Debrenne, Mary Droser, and Alan Smith for help in the preparation of this volume. Françoise Pilard, Max Debrenne, and Henri Lavina assisted greatly in the finalization of many figures. AZ's editing was facilitated by the Muséum National d'Histoire Naturelle, Paris.
We thank our contributors, one and all, for their willingness to join us in this venture and for their forbearance when we acted as editors are only too often prone to do.
Last, but certainly not least, we thank Ed Lugenbeel, Holly Hodder, and Jonathan Slutsky at Columbia University Press, and Mark Smith and his colleagues at G&S Editors, for their expert handling of both the book and us.