1. Negaunee Integrative Research Center Field Museum of Natural History 1400 South DuSable Lake Shore Drive Chicago IL 60605 USA
2. Evolutionary Studies Institute University of the Witwatersrand Private Bag 3, Wits, 9 Johannesburg 2050 South Africa
3. Integrated Science Lab, Department of Physics Umeå University SE‐901 87 Umeå Sweden
4. Roosevelt University 430 S Michigan Ave Chicago Illinois USA