Earliest evidence of mammalian social behaviour in the basal Tertiary of Bolivia.Published in:Nature, 2011, v. 474, n. 7349, p. 83, doi. 10.1038/nature09987By:Ladevèze, Sandrine;de Muizon, Christian;Beck, Robin M. D.;Germain, Damien;Cespedes-Paz, RicardoPublication type:Article