Table 1 Crown group ages (in million of years) of the major groups outlined in Figure 3.

N1

54.9

50.9 -- 59.6

72.7

52.2 -- 88.2

N2

43.9

39.0 -- 47.8

45.5

30.9 -- 59.2

N3

40.7

36.3 -- 44.8

39.7

27.4 -- 53.1

N4

32.7

27.1 -- 38.0

24.5

15.1 -- 36.6

N5

30.3

24.8 -- 35.9

20.8

12.4 -- 30.5

N6

22.4

16.9 -- 29.0

12.2

5.74 -- 16.2

N7

39.6

34.9 -- 43.6

36.7

25.1 -- 49.5

N8

37.4

32.8 -- 41.8

32.8

22.0 -- 45.4

N9

39.0

31.0 -- 40.4

29.6

18.9 -- 41.3

N10

11.8

3.48 -- 20.6

4.56

0.95 -- 10.9

N11

19.0

12.7 -- 25.1

15.5

8.43 -- 23.8

N12

27.4

22.5 -- 32.0

18.8

10.6 -- 29.0