Table 4 Absolute numbers and proportions of reef types retrieved from the PaleoReefs Database (PARED).

From: A possible link between coral reef success, crustose coralline algae and the evolution of herbivory

Geological stage

Number of all reefs (n)

Number of true reefs (n)

Number of CCA-reefs (n)

Number of true CCA-reefs (n)

Proportion of true reefs (mean ± SE)

Proportion of CCA-reefs (mean ± SE)

Proportion of true CCA-reefs (mean ± SE)

Berriasian

9

7

2

2

0.78 ± 0.14

0.22 ± 0.14

0.22 ± 0.14

Valanginian

8

5

1

1

0.63 ± 0.17

0.13 ± 0.12

0.13 ± 0.12

Hauterivian

18

4

4

3

0.22 ± 0.10

0.22 ± 0.10

0.17 ± 0.09

Barremian

20

9

4

2

0.45 ± 0.11

0.20 ± 0.09

0.10 ± 0.07

Aptian

28

18

5

4

0.64 ± 0.09

0.18 ± 0.07

0.14 ± 0.07

Albian

26

18

5

3

0.69 ± 0.09

0.19 ± 0.08

0.12 ± 0.06

Cenomanian

8

3

1

1

0.38 ± 0.17

0.13 ± 0.12

0.13 ± 0.12

Turonian

9

4

0

0

0.44 ± 0.17

0.00 ± 0.00

0.00 ± 0.00

Coniacian

3

2

1

0

0.67 ± 0.27

0.33 ± 0.27

0.00 ± 0.00

Santonian

6

2

0

0

0.33 ± 0.19

0.00 ± 0.00

0.00 ± 0.00

Campanian

5

2

1

0

0.40 ± 0.22

0.20 ± 0.18

0.00 ± 0.00

Maastrichtian

9

7

3

2

0.78 ± 0.14

0.33 ± 0.16

0.22 ± 0.14

Danian

21

17

15

13

0.81 ± 0.09

0.71 ± 0.10

0.62 ± 0.11

Selandian

2

0

1

0

0.00 ± 0.00

0.50 ± 0.35

0.00 ± 0.00

Thanetian

14

9

6

5

0.64 ± 0.13

0.43 ± 0.13

0.36 ± 0.13

Ypresian

10

5

5

3

0.50 ± 0.16

0.50 ± 0.16

0.30 ± 0.14

Lutetian

14

9

8

5

0.64 ± 0.13

0.57 ± 0.13

0.36 ± 0.13

Bartonian

3

2

1

1

0.67 ± 0.27

0.33 ± 0.27

0.33 ± 0.27

Priabonian

15

10

9

6

0.67 ± 0.12

0.60 ± 0.13

0.40 ± 0.13

Rupelian

35

26

22

17

0.74 ± 0.07

0.63 ± 0.08

0.49 ± 0.08

Chattian

45

37

23

18

0.82 ± 0.06

0.51 ± 0.07

0.40 ± 0.07

Aquitanian

96

83

62

54

0.86 ± 0.03

0.65 ± 0.05

0.56 ± 0.05

Burdigalian

12

12

9

9

1.00 ± 0.00

0.75 ± 0.13

0.75 ± 0.13

Langhian

65

59

48

46

0.91 ± 0.04

0.74 ± 0.05

0.71 ± 0.06

Serravallian

7

5

4

3

0.71 ± 0.17

0.57 ± 0.19

0.43 ± 0.19

Tortonian

77

71

62

58

0.92 ± 0.03

0.81 ± 0.05

0.75 ± 0.05

Messinian

26

23

16

15

0.88 ± 0.06

0.62 ± 0.10

0.58 ± 0.10

Zanclean

27

22

8

8

0.81 ± 0.07

0.30 ± 0.09

0.30 ± 0.09

Piacenzian

18

17

5

5

0.94 ± 0.05

0.28 ± 0.11

0.28 ± 0.11

Gelasian

16

15

13

13

0.94 ± 0.06

0.81 ± 0.10

0.81 ± 0.10

Calabrian

3

3

3

3

1.00 ± 0.00

1.00 ± 0.00

1.00 ± 0.00

Ionian

14

14

11

11

1.00 ± 0.00

0.79 ± 0.11

0.79 ± 0.11

L. Pleistocene

67

64

49

48

0.96 ± 0.03

0.73 ± 0.05

0.72 ± 0.06

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