TABLE 1.— Comparison of biometric measurements of the identified geniculate and non-geniculate coralline algae.Abbreviations: D, diameter; H, height; L, length; PF, peripheral filaments; Po, postigenous filaments; Pr, primigenous filaments; VC, ventral core.
Taxa Features/ Characteristics Dimensions Number of measuments (n) Range Mean (M) Standard Deviation (SD)
? Lithothamnion valens (Fig. 3A, B) VC L 15 16 to 18 µm 16.8 0.74
D 15 8 to 11 µm 9.2 1.1
PF L 30 8 to 15 µm 10.6 2.41
D 30 8 to 10 µm 8.8 0.74
Multiporate conceptacles D 5 84 to 117 µm 96.6 12.611
H 5 50 to 91 µm 70.2 14.42
Protuberances L 3 2898 to 3017 µm 2942.6 54.08
D 3 826 to 1391 µm 1072 236
Phymatolithon sp. (Fig. 3C, D) VC L 20 16 to 20 µm 18 1.67
D 20 12 to 14 µm 12.8 0.74
PF L 50 8 to 10 µm 8.8 0.74
D 50 6 to 9 µm 7.4 1.01
Epithallial cells L 9 8 to 15 µm 10.6 2.41
D 9 ± 5 µm – –
Multiporate conceptacles D 10 360 to 480 µm 400 42.4
H 10 140 to 180 µm 160 14.1
Mesophyllum sp. (Fig. 3E) VC L 25 12 to 24 µm 18 9.4
D 25 6 to 10 µm 8 1.41
PF L 50 8 to 25 µm 15.6 6.2
D 50 6 to 20µm 12.8 4.7
Multiporate conceptacles D 3 140 to 180 µm 160 14.14
H 3 85 to 140 µm 115 22.72
Thallus L 3 1141 to 1322 µm 1221 75.36
D 3 600 to 715 µm 643.3 51.456
Mesophyllum roveretoi Conti, 1943 (Fig. 3F) VC L 20 14 to 20 µm 16.6 2.15
D 20 8 to 12 µm 10 1.41
PF L 20 14 to 31 µm 21 6.35
D 20 8 to 28 µm 17.2 7.98
Multiporate conceptacles D 3 229 to 235 231 2.6
H 3 71 to 96 82.3 10.3
Lithoporella melobesiodies (Foslie) Foslie, 1909 (Fig. 4A, B) Pr L 15 12 to 18 µm 15.6 3.2
D 15 22 to 38 µm 31.6 8.5
Po L 30 16 to 32 µm 24.3 8.02
D 30 8 to 20 µm 14.33 6.02
Uniporate conceptacles D 3 174 to 400 µm 291.3 113.26
H 3 71 to 140 µm – –
Neogoniolithon sp. (Fig. 4C) VC L 20 10 to 28 µm 19.6 6.5
D 20 7 to 12 µm 9.2 1.7
PF L 50 9 to 20 µm 14.4 4.3
D 50 5 to 11 µm 9.4 2.4
Uniporate conceptacles D 3 550 to 600 µm 576.6 20.75
H 3 200 to 300 µm 250 40.82
Spongites fruticulosus Kützing, 1841 (Fig. 4D, E) VC L 50 16 to 24 µm 19.4 2.6
D 50 12 to 18 µm 15 2
PF L 100 12 to 22 µm 16.4 3.9
D 100 8 to 18 µm 12.6 3.5
Epithallial cells L 6 5 to 7 µm 5.8 0.74
D 6 8 to 14 µm 10.6 2.15
Titanoderma pustulatum (Lamouroux) Nägeli, 1858 (Fig. 4F) VC L 20 12 to 18 µm 15 2
D 20 8 to 15 µm 12 3.8
PF L 50 7 to 18 µm 12.6 3.8
D 50 8 to 16 µm 11.2 2.9
Uniporate conceptacles D 17 110 to 140 µm 125 10
H 17 72 to 94 µm 83.8 7.9
Amphiroa sp. (Fig. 4G-J) Core region (long cells) L 200 to 400 50 to 90 µm 66.6 17.25
D 200 to 400 8 to 20 µm 12.8 4.2
Core region (short cells) L 60 to 80 16 to 40 µm 24.8 8.9
D 60 to 80 9 to 19 µm 14.2 3.6
Intergenicula L 12 to 20 651 to 1109 µm 920 195
D 12 to 20 256 to 338 µm 298 33.5
Corallina sp. (Fig. 5A-C) Core region L 105 to 245 18 to 24 µm 21.2 2.1
D 105 to 245 8 to 12 µm 10 1.4
Intergenicula L 7 to 35 350 to 1092µm 647.33 330
D 7 to 35 134 to180 µm 154.6 19.07
Sporolithon cf. airoldii (Fig. 5D) VC L 25 8 to 16 µm 11.4 2.6
D 25 3 to 8 µm 5.4 1.85
PF L 50 5 to 12 µm 9.4 2.5
D 50 4 to 10 µm 7.6 2.2
Sporangial compartments L 70 80 to 120 µm 101 14.9
D 70 35 to 48 µm 41.4 4.58
Sporolithon praeerythraeum (Airoldi) Vannucci, Piazza, Fravega & Basso, 2000 (Fig. 5E, F) PF L 50 14 to 26 µm 18.6 4.2
D 50 10 to 12 µm 10.96 0.68
Sporangial compartments L 15 30 to 36 µm 32.3 2.1
D 15 59 to 68 µm 61 10