1. Department of Zoology, Miami University, Oxford, Ohio
2. Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, Massachusetts
3. Department of Biology, Middle Tennessee State University, Murfreesboro, Tennessee
4. Environmental Chemistry and Technology Program, University of Wisconsin, Madison, Wisconsin
5. Department of Geological Sciences, Michigan State University, East Lansing, Michigan, USA
6. Nordic Center for Earth Evolution and Institute of Biology, University of Southern Denmark, Odense M, Denmark