Special Thanks The expeditions @ fieldmuseum™ program is generously funded by The Negaunee Foundation. This season's expedition to the Green River Formation is supported by The Field Museum. Dr. Lance Grande’s research program on fossil and living fishes has benefited greatly from the financial support of the National Science Foundation and from a grant from the National Geographic Society. Richard Lewis and his family own the ranch on which the quarry is found, and James E. Tynsky and his family operate this quarry. We thank them all for permission to camp and work in this quarry during this and past expeditions. expedtions @ fieldmuseum™ would also like to thank the Shedd Acquarium for access to their collections.