Chlamydaster fimbriatus Dürrschmidt and Patterson, 1987
Diagnosis: Cell body surrounded by a fimbriated mucus envelope through which axopods extend; each cell contains two or three contractile vacuoles, a centrosome and an eccentrically located nucleus with a single nucleolus.
Ultrastructurally cells have typical centroheliozoan characteristics such as a centrosome with a trilamellate disc, mitochondria with ribbon-like cristae, ball-and-cone kinetocysts, and a peripheral lacunar system. The axopodial axonemes possess a single hexagon of six microtubules.
C. fimbriatus differs from the only other species recognized in this genus (C. laciniatus and C. sterni) in its size and number of arms.
Chlamydaster fimbriatus spreads its axopodia on the substratum when feeding.