A, choanosomal pentactin; B, basalia; C, detail of basalia’s shaft; D, detail of basalia’s anchor; E, three regions of a sceptre; F–G, dermal pentactin; H–I, atrial pentactin; J, micropentactin; K, details of the tip and middle shaft of an uncinate; L, microhexactin; M, stauractin with two rays broken; N, micramphidisc.