Of, relating to, or designating the group Phaeodaria (phylum Actinopoda), comprising radiolarians whose central capsule has three groups of pores.
The taxonomic rank of the Phaeodaria has been subject to many changes; they are regarded as a class of the Actinopoda in some recent schemes.
A radiolarian of the Phaeodaria.
Late 19th century; earliest use found in Ernst Haeckel (1834–1919). From scientific Latin Phaeodaria, group name + -an.