TABLE 12. Comparative spicule dimensions of Callyspongia (Callyspongia) cacumen Payne, Samaai & Gibbons sp. nov. specimens and the species of Callyspongia (Callyspongia) occurring in the region of interest (WIO & South Africa). Micrometric values are in µm, n = 20 where applicable.

	Specimen	Oxea
Callyspongia (Callyspongia) cacumen sp. nov.	Holotype TS 2369	64 (57–69) × 3 (2–4)
	Paratype TS 2330	69 (61–76) × 4 (2–4)
	Paratype TS 2341	64 (55–69) × 3 (2–4)
	Paratype TS 2353	66 (58–75) × 3 (2–4)
	Callyspongia (Callyspongia) differentiata (Dendy, 1922)	80 × 3
	Callyspongia (Callyspongia) reticutis (Dendy, 1905)	72 × 3
	Callyspongia (Callyspongia) tubulosa (Linnaeus, 1759) sensu (Esper, 1797)	110–140 × 13