“…Previous molecular dating analyses of Magnoliidae have been carried out either at an intra-ordinal level (e.g., Chanderbali et al, 2001;Doyle et al, 2004;Pirie et al, 2006;Smith et al, 2008;Marquínez et al, 2009;Pirie and Doyle, 2012) or at the level of angiosperms and higher (e.g., Bell et al, 2005Bell et al, , 2010Moore et al, 2007;Soltis et al, 2008;Magallón and Castillo, 2009;Magallón, 2010;Smith et al, 2010). A maximum of six calibration points have been used so far within the group (Magallón and Castillo, 2009).…”