1. ISEM, Univ Montpellier, CNRS, IRD, Montpellier, France,
2. Departamento de Paleontología de Vertebrados, Museo de Historia Natural, Universidad Nacional Mayor San Marcos (MUSM), Av. Arenales 1256, Lima 11, Peru,
3. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA), CCT-CONICET-Mendoza, Av. Ruiz Leal s/n, Parque Gral. San Martín, 5500 Mendoza, Argentina,
4. Department of Earth and Environmental Sciences, Columbia University, 61 Route 9W - PO Box 1000 Palisades, New York, 10964-8000 U.S.A.,
5. Division of Vertebrate Paleontology, American Museum of Natural History, Central Park West at 79th Street, New York, New York 10024, U.S.A.,