Table 1.
Comparison of divergence estimates obtained with different data sets, varying prior probability distributions for the age of the placental root, and two different topologies (see supporting information)
| Group | 16,397-bp data set; 105 mya prior; Murphy (14) root | 16,397-bp data set; 65 mya prior; Murphy (14) root | 16,397-bp data set; 146 mya prior; Murphy (14) root | 16,397-bp data set; 105 mya prior; myomorph root | 16,397-bp K/T “body size” data set; 105 mya prior; Murphy (14) root |
|---|---|---|---|---|---|
| Base of Placentalia (node 82) | 107 (98–117) | 105 (96–115) | 108 (99–119) | 131 (116–148) | 102 (91–116) |
| Xenarthra–Boreoeutheria (node 81) | 102 (94–111) | 101 (93–109) | 103 (95–112) | NA | NA |
| Base of Boreoeutheria (node 78) | 94 (88–101) | 93 (87–100) | 95 (88–102) | NA | 90 (83–101) |
| Base of Laurasiatheria (node 77) | 85 (80–90) | 85 (80–90) | 85 (81–91) | 89 (84–95) | 82 (76–90) |
| Base of Euarchontoglires (node 58) | 87 (81–94) | 87 (81–93) | 88 (82–94) | NA | 85 (77–94) |
| Base of Paenungulata (node 43) | 62 (57–65) | 62 (57–65) | 62 (57–65) | 57 (54–62) | NA |
| Base of Cetartiodactyla (node 68) | 64 (62–65) | 64 (62–65) | 64 (62–65) | 64 (63–65) | NA |
| Base of Perissodactyla (node 62) | 56 (54–58) | 56 (54–58) | 56 (54–58) | 56 (54–58) | NA |
| Base of Carnivora (node 59) | 55 (51–60) | 55 (51–60) | 55 (50–60) | 56 (51–61) | NA |
| Base of Chiroptera (node 73) | 65 (62–68) | 65 (62–68) | 65 (62–68) | 66 (63–69) | 65 (61–69) |
| Base of Lagomorpha (node 52) | 51 (43–59) | 51 (42–58) | 51 (43–59) | 71 (57–81) | NA |
| Base of Afrosoricida (node 45) | 66 (60–73) | 66 (59–72) | 66 (59–73) | 58 (53–64) | 76 (66–87) |
| Base of Eulipotyphla (node 76) | 76 (71–81) | 75 (71–80) | 76 (71–81) | 79 (74–84) | 73 (69–75) |
| Base of Rodentia (node 56) | 74 (68–81) | 73 (67–80) | 74 (68–81) | NA | 70 (63–79) |
| Base of Primates (node 49) | 77 (71–84) | 77 (70–83) | 77 (71–84) | 95 (86–105) | NA |
| Base of Xenarthra (node 80) | 71 (63–79) | 72 (64–79) | 71 (63–79) | 66 (60–73) | NA |
| Hystricidae–Caviomorpha (node 53) | 38 (31–46) | 38 (30–46) | 38 (31–46) | 71 (57–85) | NA |
| Mus–Rattus (node 54) | 16 (13–21) | 16 (13–21) | 16 (13–21) | 35 (26–46) | 16 (12–20) |
Node numbers refer to Fig. 2 and do not apply to the myomorph root tree (see supporting information); 95% credibility intervals for divergence times are given in parentheses. NA, not applicable.