Rhodolith-forming coralline red algae in the CaCO biofactory - A case study from the Serravallian of tropical northeastern Indian Ocean Author Dey, Rikee Birbal Sahni Institute of Palaeosciences, 53 University Road, Lucknow — 226 007, Uttar Pradesh (India) & Department of Applied Geology, Indian Institute of Technology (Indian School of Mines), Dhanbad — 826 004, Jharkhand (India) Author Basso, Daniela University of Milano-Bicocca, Department of Earth and Environmental Sciences, Piazza della Scienza 4, I- 20126, Milano (Italy) Author Chakraborty, Arindam Birbal Sahni Institute of Palaeosciences, 53 University Road, Lucknow — 226 007, Uttar Pradesh (India) & Department of Geology, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur (Malaysia) Author Roy, Lopamudra Birbal Sahni Institute of Palaeosciences, 53 University Road, Lucknow — 226 007, Uttar Pradesh (India) & Centre of Advanced Study in Geology, University of Lucknow, Lucknow — 226007, Uttar Pradesh (India) Author Bhaumik, Ajoy Kumar Department of Applied Geology, Indian Institute of Technology (Indian School of Mines), Dhanbad — 826 004, Jharkhand (India) Author Ghosh, Amit K. Birbal Sahni Institute of Palaeosciences, 53 University Road, Lucknow — 226 007, Uttar Pradesh (India) Sahni Institute of Palaeosciences, 53 University Road, Lucknow - 226 007, Uttar Pradesh (India) akghosh_in@yahoo.com & amitk_ghosh@bsip.res.in text Comptes Rendus Palevol 2023 2023-08-18 22 26 541 567 http://dx.doi.org/10.5852/cr-palevol2023v22a26 journal article 305698 10.5852/cr-palevol2023v22a26 bec95f48-cce1-4336-a1c7-0e62b540fc5c 1777-571X 14224623 urn:lsid:zoobank.org:pub:6658E8E5-8430-4436-97B2-5D81756BEFF0

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