1. 1Department of Earth Atmosphere and GIS, Western Illinois University, Macomb, Illinois 61455, USA
2. 2Geology and Environmental Sciences, State University of New York at Fredonia, Fredonia, New York 14063, USA
3. 3Department of Chemistry, Western Illinois University, Macomb, Illinois 61455, USA
4. 4Department of Organismic & Evolutionary Biology and Museum of Comparative Zoology, Harvard University, Cambridge, Massachusetts 02138, USA