A Kill Curve For Phanerozoic Marine Species David M. Raup ...

TABLEAl. Survivorship data used in this analysis. Numbers of surviving genera are monitored at stage boundaries until the cohortis completely extinct or until 55 m.y, has passed (from the mid-point of the initial stage).Stage Age at base Ma Genera In onglnal cohort Number of genera survlvlng to base of each succeed~ng stageN-DaTommAtdaBotolMidmMiduMidDresFranTrepTremArenLlviLldeCaraAshgLdovWen1LudlPridGediSiegEmsiEifeGiveFrasFameTourViseSerpBashMoscStepAsseSakmLeonGuadDjhuDoraInduOlenAnisLadiCarnNoriHettSinePlieToarAaleBajoBathCallOxfoKimmTithBerrBalaHautBarrAptiAlbiCenoTuroConiSantCampMaes162 313 - 262 17,621 aenera ( 136321 61 33 21 18 14 10 7 6 6 100 41 32 23 11 9 7 7 69392286555 512662222 661577765 77932 70 30 21 10 6 5 4 79 29 11 6 2 1 46 14 6 5 5 113 65 53 44 283 196 157 108 50 39 230 177 114 58 49 40 270 157 62 51 39 355 143 107 78 62 56 99 71 51 37 31 24 24 267 189 124 109 92 85 68 48 234 144 113 86 74 64 46 32 135 94 67 58 35 26 21 13 10 61 36 31 28 22 15 8 3 195 146 99 65 42 28 23 18 210 114 58 35 15 9 7 226 128 61 21 15 13 192 99 49 29 23 19 110 56 34 28 21 89 35 24 18 15 105 71 43 27 21 281 142 103 86 71 257 133 103 78 63 86 66 44 33 30 124 80 44 42 36 134 68 59 46 34 75 68 50 36 15 5 2 2 81643911321111 120691653111 11 155 53 23 11 10 9 9 9 5 3 53 31 19 14 13 13 13 10 4 4 27887666333 4 4 3 3 3 3 16 12 12 11 10 5 5 5 34 27 23 20 9 9 9 124 93 63 28 26 24 20 126 63 29 28 26 22 110 40 40 39 31 27 58 54 52 44 41 40 35 32 54 48 34 29 28 25 23 21 19 17 95 65 43 42 32 30 28 27 26 17 76 52 49 41 40 37 34 32 22 22 66 57 46 43 40 32 29 15 13 13 12 58 36 34 28 24 22 18 17 17 13 13 113 90 69 59 46 34 32 29 27 24 112 75 70 65 48 46 44 41 40 32 82 54 47 27 24 20 20 19 18 121 70 42 39 33 28 25 18 71 36 33 27 26 22 18 75 60 42 37 33 23 20 43 31 24 21 14 12 8 8 75 61 52 39 32 20 20 19 17 63 43 28 24 17 16 15 14 87 53 38 27 20 17 16 16 107 73 51 45 43 39 33 9 167 96 75 72 69 61 18 12 10 10 180 134 127 120 91 30 15 11 9 113 95 88 74 15 11 6 4 4 4 93 69 53 12 10 8 7 5 4 105 61 13 8 6 6 4 2 190 38 24 15 10 9 4 3 48 32 18 15 9 4 4 3 3 extant taxa excluded)