Josie Iselin is a photographer and installation artist. She holds a Bachelor's degree from in Visual and Environmental Studies from Harvard and a Master of Fine Arts from San Francisco State University. Although her training is in traditional photography, she now produces images exclusively with a flatbed scanner and a computer. Her work has been exhibited at the Yerba Buena Center for the Arts, Intersection for the Arts, SF Camerawork, and art galleries in and around San Francisco, where she lives. Sandra J. Carlson is a Professor in the Geology Department of the University of California in Davis. She is a paleontologist specialising in marine invertebrates. She lives in San Francisco.