1. Paläontologisches Institut und Museum, Universität Zürich, Karl-Schmid-Strasse 4, 8006 Zürich, Switzerland
2. Center for Tropical Paleoecology and Archeology, Smithsonian Tropical Research Institute, Balboa, Ancón 0843-03092, Panama
3. Departamento de Paleontología de Vertebrados, Museo de Historia Natural-Universidad Nacional Mayor de San Marcos, Avenida Arenales 1256, Lima 11, Perú
4. Department of Mammalogy, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA
5. Department of Palaeontology, Faculty of Earth Sciences, Geography and Astronomy, University of Vienna, Josef Holaubek Platz 2 (UZA II)/2A323, 1090 Vienna, Austria
6. Vienna Doctoral School of Ecology and Evolution (VDSEE), University of Vienna, Djerassiplatz 1, 1030 Vienna, Austria