pinulus

pinulus

[′pin·yə·ləs]
(invertebrate zoology)
A sponge spicule, usually with five rays, one of which develops numerous small spines.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
calyx Schulze has shorter inflated pinulus and spheric oxyhexasters; H.