Ordovician

Silurian

Average number of genera

Average of total in %

Min %

Max %

Average number of genera

Average of total in % 

Min %

Max % 

Average number of genera

Average of total in % 

Min % 

Max %

1 plate group

35.23

50.68

33.96

75

45.75

52.18

35.82

75

18.75

44.51

33.96

68.75

2 plate groups

13.05

18.77

4.17

31.25

16.83

19.2

4.17

30.77

7.38

17.52

6.25

31.25

3 plate groups

7.23

10.4

0

16

9.17

10.46

0

13.33

4.38

10.4

6.25

16

4 plate groups

6.33

9.11

0

22.64

6.79

7.74

0

16.07

5.75

13.65

0

22.64

5 plate groups

3.59

5.16

0

15.38

4.38

5

1.87

15.38

2.63

6.24

0

9.3

6 plate groups

4.08

5.87

0

12.5

4.75

5.42

0

11.94

3.31

7.86

0

12.5

Average generic diversity

69.51

87.67

42.13