Phylogeny and revision of Leucaltis and Leucettusa (Porifera: Calcarea), with new classification proposals and description of a new type of aquiferous system Author Lopes, Matheus Vieira Author Klautau, Michelle text Zoological Journal of the Linnean Society 2023 2023-07-31 198 691 746 journal article 54778 10.1093/zoolinnean/zlad008 e725dafd-ea73-4b9d-ac7f-452e3052bf29 0024-4082 7894159 5945BCC4-C3CB-4370-8ED8-632D8C6F1B15

Table 15. Spicule measurements of RoƜella Ʋera

Specimen/Reference	Spicule	Actine	Length (µm)				Width (µm)				N
aActines were broken in the preparations and could not be measured. H, holotype.
			Min	Mean	SD	Max	Min	Mean	SD	Max
BMNH 1884.4.22.60 (H)	Cortical triactine		270.0	296.7	30.6	330.0	20.0	23.3	5.8	30.0	3
	Cortical tetractinea		-	-	-	-	-	-	-	-	-
	Pygmy triactine		-	50.0	-	-	-	5.0	-	-	1
	Pygmy tetractine	basal	50.0	63.8	10.2	82.5	7.5	10.0	1.7	12.5	10
		apical	70.0	78.3	8.8	87.5	7.5	10.0	2.5	12.5	3
After Poléjaeff (1883; H)	Cortical triactine		-	-	-	450.0	-	37.5	-	-	?
	Cortical tetractine	basal	-	-	-	800.0	-	80.0	-	-	?
		apical	600.0	-	-	2000.0	60.0	-	-	200.0	?
	Pygmy triactine		-	-	-	-	-	-	-	-	-
	Pygmy tetractine	basal	50.0	-	-	100.0	5.0	-	-	10.0	?
		apical	50.0	-	-	100.0	5.0	-	-	10.0	?
After Borojević & Grua (1965)	Cortical triactine		150.0	-	-	350.0	10.0	-	-	20.0	?
	Cortical tetractine	basal	300.0	-	-	500.0	-	50.0	-	-	?
		apical	-	-	-	2000.0	-	-	-	-	?
	Pygmy triactine		55.0	-	-	100.0	-	10.0	-	-	?
	Pygmy tetractine	basal	55.0	-	-	100.0	-	10.0	-	-	?
		apical	-	-	-	-	-	-	-	-	-