what are radiolaria
The Radiolaria, also called Radiozoa, are protozoa of (diameter 0.1â0.2 mm) that produce intricate mineral skeletons, typically with a central capsule dividing the cell into the inner and outer portions of endoplasm and ectoplasm.he Radiolaria can therefore be divided into two major lineages: Polycystina (Spumellaria + Nassellaria) and Spasmaria (Acantharia + Taxopodida). There are several higher-order groups that have been detected in molecular analyses of environmental data.