1. Department of Earth and Environmental Sciences, University of Iowa, Iowa City, Iowa, 52242, U.S.A., , ,
2. 3309 Snowbrush Court, Fort Collins, Colorado, 80521, U.S.A.,
3. Department of Geology and Geological Engineering, Colorado School of Mines, Golden, Colorado, 80401, U.S.A.,
4. Office State Archaeologist, Retired, 700 South Clinton Street Building, The University of Iowa, Iowa City, IA 52242-1030, U.S.A.,
5. Department of Earth and Planetary Science, University of California, Berkeley, CA 94720-4767, U.S.A.,
6. Marion Heritage Center, 590 10th Street, Marion, Iowa 52302, U.S.A.,
7. Ancient DNA Centre, McMaster University, Hamilton, Ontario, Canada,
8. Department of Geosciences, Pennsylvania State University, University Park, PA 16802, U.S.A.,
9. Central Midwest Water Science Center, U.S. Geological Survey, 400 South Clinton Street, Iowa City, Iowa 52240, U.S.A.,
10. University of Iowa Museum of Natural History, University of Iowa, Iowa City, Iowa, 52242, U.S.A., ,
11. School of Environmental Physical and Applied Sciences, University of Central Missouri, Warrensburg, Missouri, 64093, U.S.A., Deceased
12. Mississippi Valley Archaeology Center, University of Wisconsin–La Crosse, La Crosse, Wisconsin, 54601, U.S.A.,