Heliozoea

He·li·o·zo·e·a

(hē'lē-ō-zō'ē-ă),
A class of protozoans (subphylum Sarcodina) distinguished by stiff radiating axopodia on all sides, usually naked, though some have a skeleton of siliceous scales and spines, but without a central capsule. They are mostly fresh water dwellers, and colonial forms are common.
[helio- + G. zōon, animal]