Ehrenberg, 1838, emend. Riedel, 1967
See page RaPo. 1 Introduction for more about Radiolaria Polycystina. The following synopsis, based chiefly on the scheme proposed by Riedel (1967b, 1971), is restricted to extant families only (according to De Wever et al., 2001, living and fossil polycystine radiolarins comprise 7 orders, 13 superfamilies, 127 familes, and 32 subfamilies). As pointed out above, it is a provisional classification very likely to change as more structural and evolutionary data are obtained. Taxa in underlined characters are those treated in detail in this chapter.
Outline classification
Kingdom Protoctista Hogg, 1861
Phylum Actinopoda Calkins, 1909
Subphylum Sarcodina Hertwig and Lesser, 1876
Class Heliozoa Haeckel, 1886
Class Acantharia Müller, 1858
Class Phaeodaria Haeckel, 1879
(see next chapter)
Class Polycystina Ehrenberg, 1838, emend. Riedel, 1967
Order Collodaria Haeckel, 1881
Family Thalassicollida Haeckel, 1862
Family Collozoida Haeckel, 1862
Family Thalassosphaerida Haeckel, 1862
Family Sphaerozoida Haeckel, 1862
Order Spumellaria Ehrenberg, 1875
Family Collosphaeridae Müller, 1858, emend. Strelkov & Reshetnjak, 1971
Family Actinommidae Haeckel, 1862, emend. Sanfilippo and Riedel, 1980
Family Coccodiscidae Haeckel, 1862, emend. Sanfilippo and Riedel, 1980
Family Phacodiscidae Haeckel, 1881
Family Spongodiscidae Haeckel, 1862, emend. Riedel, 1967
Family Litheliidae Haeckel, 1862
Family Pyloniidae Haeckel, 1881
Family Tholoniidae Haeckel, 1862
Order Nassellaria Ehrenberg, 1875
Family Spyridae (=Trissocyclidae, Acanthodesmiidae) Ehrenberg, 1847, emend. Petrushevskaya, 1971
Family Plagoniidae Haeckel, 1881, emend. Riedel, 1967
Family Theoperidae Haeckel, 1881, emend. Riedel, 1967
Family Carpocaniidae Haeckel, 1881, emend. Riedel, 1967
Family Pterocorythidae Haeckel, 1881, emend. Riedel, 1967
Family Artostrobiidae Riedel, 1967, emend. Foreman, 1973
Family Cannobotryidae Haeckel, 1881, emend. Riedel, 1967