spicules (styles, oxeas or strongyles) with whorls (circles) of spines. Verticillated styles are characteristic spicules of Ceratoporellid and Agelasid sponges. Verticillated oxeas occur in the genus Acanthocinachyra. Verticillated strongyles occur in (unrelated) genera Zyzzya, Hymeraphia and Dotona.
Alternative form for verticillated : verticillate.