1. School of Geosciences, University of Edinburgh, The King's Buildings, James Hutton Road, Edinburgh EH9 3FE, U.K.,
2. Département de Géologie et Paléontologie, Musée d'histoire naturelle, Case postale 6434-1211, Genève 6, Switzerland,
3. Natural History Museum of Zimbabwe, Park Road, Bulawayo, Zimbabwe,
4. Evolutionary Studies Institute, University of the Witswatersrand, Johannesburg, Private Bag 3 Wits, 2050, South Africa,
5. National Museums and Monuments of Zimbabwe, Rotten Row, Harare, Zimbabwe,
6. Fossil Reptiles, Amphibians and Birds Section, Natural History Museum, Cromwell Road, London SW7 5BD, U.K.,