Description of new chiactine-bearing sponges provides insights into the higher classification of Calcaronea (Porifera: Calcarea) Author Alvizu, Adriana Author Xavier, Joana R. Author Rapp, Hans Tore text Zootaxa 2019 2019-06-13 4615 2 201 251 journal article 26507 10.11646/zootaxa.4615.2.1 f8ebafc8-79ab-4eef-b52b-8c207ff2b1ec 1175-5326 3244638 9B9884DA-18D5-4BC9-950F-0436E075AAF8

TABLE 5. Spicule measurements from specimens of Achramorpha glacialis (lectotype BMNH1907.8.6.101; cotype BMNH1907.8.6.103-104). Measurements from the original description by Jenkin (1908) are included below.

BMNH1907.8.6.101; BMNH1907.8.6.103-104
(*) Most of them broken. (**) Paired actines not completely visible in the slides. (***) Diactines II = Microdiactines. (--) Measurements not available.
Spicules	Length (µm)				Width (µm)
	Min	Mean	Max	SD Min		Mean	Max	SD	n
Diactines	120.8	338.4	395.1	73.8 6.3		14.8	20.1	4.2	15
Microdiactines	48.5	63.1	65.7	36.7 2.0		2.8	3.3	0.4	10
Trichoxeas*	143.2	147.6	156.3	5.9 2.0		2.6	3.1	0.4	4
Cortical triactines
Unpaired actines	174.9	235.3	317.0	42.7 7.7		10.5	13.5	1.6	20
Paired actines	107.3	146.9	187.2	23.4 7.3		10.9	15.1	1.9
Chiactines
Unpaired actines	282.4	334.2	402.0	38.0 9.5		13.4	15.7	2.2	10
Paired actines	133.2	160.4	188.4	18.3 9.8		12.5	14.4	1.6
Apical actines	68.8	85.0	98.5	7.5 7.5		9.9	13.0	1.7
Oscular tetractines
Unpaired actines	105.3	174.1	244.6	49.0 8.8		11.6	15.3	2.3	7
Paired actines**	--	--	--	--	--	--	--	--	--
Apical actines	24.6	68.2	135.6	38.8 5.7		9.8	13.5	2.4	12
Measurements from the original description (Jenkin 1908)
Spicules	Length (µm)				Width (µm)
Diactines I	280-440				12-24
Diactines II***	35-40				2-3
Trichoxeas	>400				--
Cortical triactines
Unpaired actines	200-380				12
Paired actines	130-180				10-14
Chiactines
Unpaired actines	340-400				15
Paired actines	130-180				16
Apical actines	70-100				12
Oscular tetractines (small)
Unpaired actines	100-120				9-10
Paired actines	50-100				7-8
Apical actines	--				--
Oscular tetractines
Unpaired actines	>220				--
Paired actines	>200				--
Apical actines	120				--