The Radiolaria can therefore be divided into two major lineages: Polycystina (Spumellaria + Nassellaria) and Spasmaria (Acantharia + Taxopodida).
Os Radiolaria poden, por tanto, ser divididos en dúas grandes liñaxes: Polycystina (Spumellaria + Nassellaria) e Spasmaria (Acantharia + Taxopodida).