TinT results for three taxa. Green, blue, and red bars represent subfamilies identified in Figure 4 as young, intermediate, and old, respectively. Brown bars indicate subfamilies that are less widely distributed. Plots for M. brandtii and M, davidii are available in Additional file 3. Numbers on the x-axis are relative time periods within each taxon with zero at the origin of detectable activity for these SINE subfamilies and one representing the boundary of current activity.