ACKNOWLEDGMENTS

We thank S. Vizcaíno and A. Rinderknecht for the careful revision of the manuscript and useful suggestions, and O. Limarino (UBA, CONICET) for the advice on the geological context of the footprints and comments about the age of the Vinchina Formation. The manuscript was also improved by suggestions of A. Candela (FCNyM, La Plata) and F. Abdala (WITS, South Africa). Finally, we are thankful to H. Fernandez (FCN e IML, Tucumán), C. Marsicano (UBA, CONICET) and A. Mancuso (IANIGLA-CCTCONICET, Mendoza) and for their help during field work. Funding for this research was provided by UBACyT—X133 and PICT 07-1902 (V.K). This is the contribution R-21 of the Instituto de Estudios Andinos Don Pablo Groeber.