1. North Carolina Museum of Natural Sciences, a division of the North Carolina Department of Natural and Cultural Resources, 11 West Jones Street, Raleigh, NC 27601, USA;
2. Department of Biological Sciences, North Carolina State University, Campus Box 7617, Raleigh, NC 27695, U.S.A.
3. Evolutionary Studies Institute (ESI), University of the Witwatersrand, Johannesburg, 2050, South Africa
4. Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, Lisbon, Portugal
5. Museu Nacional de Geologia, Av. 24 de Julho n°355, Maputo, Mozambique
6. Karoo Palaeontology, Iziko South African Museum, Cape Town 8001, South Africa
7. Negaunee Integrative Research Center, Field Museum of Natural History, 1400 South Lake Shore Drive, Chicago, IL 60605-2496, U.S.A.