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. 2014 Oct 22;281(1793):20141278. doi: 10.1098/rspb.2014.1278

Table 1.

Summary of estimates for the age of Placentalia and the number of placental lineages crossing the K–Pg boundary with different datasets, clock models and assumptions. Values in italic represent point estimates, while values in brackets represent 95% HPD intervals. All analyses enforced nine topological constraints within Placentalia to match the current consensus phylogeny.

dataset morph morph TEa morph morph TE morph morph TE morph morph TEb
clock model TK IGR IGR TK IGR IGR TK IGR IGR TK IGR IGR
node age constraints root only root only root only root and internal root and internal root and internal root, internal and Placentalia <93.8 Ma root, internal and Placentalia <93.8 Ma root, internal and Placentalia <93.8 Ma root, internal and Placentalia <66 Ma root, internal and Placentalia <66 Ma root, internal and Placentalia <66.0 Ma
age of Placentalia (Ma) 136.2 (118.6–151.2) 163.7 (146.9–181.3) 164.5 (150.1–180.1) 121.7 (108.6–134.5) 141.5 (127.6–158.1) 137.0 (124.0–151.7) 92.9 (90.5–93.8) 93.0 (90.6–93.8) 92.2 (90.2–93.8) 66.0 (65.9–66.0) 65.9 (65.5–66.0) 65.9 (65.6–66.0)
number of placental lineages crossing KPg boundary 45 (31–50) 53 (36–56) 49 (35–52) 37 (27–46) 40 (28–46) 40 (28–46) 30 (23–37) 35 (24–46) 34 (22–46) 1 1 1

aShown in figure 1a.

bShown in figure 1b.