1. Sección Paleontología de Vertebrados, CONICET–Museo Argentino de Ciencias Naturales ‘Bernardino Rivadavia’, Avenida Ángel Gallardo 490 (C1405DJR), Buenos Aires, Argentina
2. School of GeoSciences, University of Edinburgh, Grant Institute, James Hutton Road, Edinburgh EH9 3FE, UK
3. National Museums Scotland, Chambers Street, Edinburgh EH1 1JF, UK