This file contains all the simulated trees used within this study. They were created using «S_SCRIPTb-creatingSimulationCode.R». Here we use the R package{TreeSim} and the command «sim.rateshift.taxa» Each tree's name contains its variable values that were used to create it «n500_l0.20.2_m00_frac10010_t2_EXTANT_SIM1.tre» n500 = 500 extant taxa tips l0.20.2 = λ value is 0.2 before and after the mass extinction event (MEE) m00 = u value is 0 before and after the MEE frac10010 = the MEE was 10% survival t2 = MEE occured 2 time units in the past. EXTANT = the tree contains extant taxa only SIM1 = the tree's simulation number .tre = tree can be examined in programs such as figtree (http://tree.bio.ed.ac.uk/software/figtree).