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Table 2 Summary of the prior and posterior ages for the constrained nodes

From: Integration of molecules and new fossils supports a Triassic origin for Lepidosauria (lizards, snakes, and tuatara)

Constrained nodes

Split

Minimum age of fossil constraint

Median posterior (calculated age)

95% HPD lower

95% HPD upper

X

Archosauromorpha–Lepidosauromorpha

255

271

259

285.2

Y

Crown Archosauria sensu stricto

247

248.3

247

252.8

1

Sphenodon–Varanus (Lepidosauria)

238

240.8

238

249.6

2

Eublepharis–Sphaerodactylus (Gekkonidae)

44

50.5

44

63.3

3

Xantusia–Cordylus

61

67

61

84.3

4

Lacertidae–Amphisbaenia

61

66.1

61

80.9

5

Python–Elgaria (Anguimorpha)

148

150.3

148

156.8

6

Varanus–Lanthanotus

48

50.5

48

58.3

7

Heloderma–Anniella

98

100.4

98

108

8

Elgaria–Ophisaurus

33

35.3

33

42.1

9

Chamaeleo–Calumma (chameleons)

19

21.8

19

29.6

10

Physignatus–Ctenophorus

16

18.9

16

26.9

11

Gambelia–Anolis

48

50.5

48

58

12

Shinisaurus–Elgaria

128

129.6

128

134.4

  1. The minimum ages of the fossils were used as hard bounds, and prior ages set as exponentially distributed with a mean = 4.0. The posterior (calculated) ages are listed as median, 95% HDP lower and 95% HDP upper.