The Collaborative International Dictionary of English v.0.48:
Actinopoda \Actinopoda\ n. 1. 1 heliozoans; radiolarians. Syn: subclass Actinopoda [WordNet 1.5]WordNet (r) 3.0 (2006):
Actinopoda n 1: heliozoans; radiolarians [syn: Actinopoda, subclass Actinopoda]