Evolutionary tracks (solid lines) and isochrones (dashed lines) from Baraffe et al. (2015). The brown dwarf limit lies at 0.073 M_⊙. Isochrones from top to bottom: 0.5, 1, 2, 5 Myr, and 1 Gyr. The red points are the Taurus members classified as dippers, while the gray points are Taurus members as in Herczeg & Hillenbrand (2014). HD 285893 (SpT F8) does not appear in this plot for the sake of readability because its derived T_eff is much higher than that of the rest of the sample. The stellar ages scatter around 1 Myr, and with the exception of LkCa15 (marked with a black arrow) and HD 285893, they are on their Hayashi tracks and are still fully convective.