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Fresh light on southern early mammals


Little is known about mammalian evolution in South America during the age of the dinosaurs. The discovery of 100-million-year-old skulls confirms that mammalian faunas were endemic in southern continents at this time. See Letter p.98

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Figure 1: South American mammals from the early Late Cretaceous.



  1. Rougier, G. W., Apesteguía, S. & Gaetano, L. C. Nature 479, 98–102 (2011).

    Article  ADS  CAS  Google Scholar 

  2. Bonaparte, J. F. & Migale, L. A. Protomamíferos y mamíferos Mesozoicos de América del Sur (Museo de Ciencias Naturales Carlos Ameghino, 2010).

    Google Scholar 

  3. Rougier, G. W., Forasiepi, A. M., Hill, R. V. & Novacek, M. Acta Palaeontol. Pol. 54, 195–212 (2009).

    Article  Google Scholar 

  4. Rougier, G. W., Chornogubsky, L., Casadio, S., Arango, N. P. & Giallombardo, A. Cretac. Res. 30, 223–238 (2009).

    Article  Google Scholar 

  5. Gelfo, J. N. & Pascual, R. Geodiversitas 23, 369–379 (2001).

    Google Scholar 

  6. Gelfo, J. N., Goin, F. J., Woodburne, M. O. & de Muizon, C. Palaeontology 52, 251–269 (2009).

    Article  Google Scholar 

  7. de Muizon, C. & Céspedes-Paz, R. in The Origins and Evolution of Cenozoic South American Mammals (eds Rosenberger, A. L. & Tejedor, M. F.) (Springer, in the press).

  8. Ladevèze, S., de Muizon, C., Beck, R. M. D., Germain, D. & Cespedes-Paz, R. Nature 474, 83–86 (2011).

    Article  Google Scholar 

  9. Iturralde-Vinent, M. A. Int. Geol. Rev. 48, 791–827 (2006).

    Article  Google Scholar 

  10. Sigogneau-Russell, D. Bull. Mus. Natl Hist. Nat. Paris 16, 291–312 (1995).

    Google Scholar 

  11. Rauhut, O. W. M., Martin, T., Ortiz-Jaureguizar, E. & Puerta, P. Nature 416, 165–168 (2002).

    Article  ADS  CAS  Google Scholar 

  12. Rougier, G. W., Martinelli, A. G., Forasiepi, A. M. & Novacek, M. J. Am. Mus. Novit. no. 3566 (2007).

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Correspondence to Christian de Muizon.

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de Muizon, C. Fresh light on southern early mammals. Nature 479, 51–52 (2011).

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