USA - Florida
The Florida Museum of Natural History has two field seasons each year using volunteers to augment museum staff and University of Florida students. The digs are usually in the spring between March and early May and in the fall between October and early December. Unfortunately there are no funds for travel, housing or meals, much less a salary. The location can vary from season to season, and geologic age of the sites can range from Oligocene to Pleistocene.
Home page for Florida Museum of Natural History Vertebrate Paleontology program is: http://www.flmnh.ufl.edu/vertpaleo/
Mason B. Meers, Ph.D.
Phone: +1 813 253 3333, ext. 3655