Popofskyelloidea

Belongs within: Nassellaria.

The Popofskyelloidea are a group of radiolarians known from the Late Devonian to the Jurassic (Afanasieva et al. 2005).

Characters (from Afanasieva et al. 2005): Bilaterally-symmetrical conical segmented external skeleton. Subspherical apical segment present. Porous, lamellar external shell and inner frame in shape of spicule and two columellae.

<==PopofskyelloideaAA05
    |--Hexapylocapsa Dumitrica & Zugel 1998 [Hexapylocapsidae]AA05
    |    `--H. anachoretaAA05
    `--PopofskyellidaeAA05
         |--Totollum Schwartzapfel & Holdsworth 1996AA05
         |--Popofskyellum Deflandre 1963AA05
         |    `--P. tardicarboniferumAA05
         |--Cyrtentactinia Foreman 1963AA05
         |    `--C. primoticaAA05
         `--Tuscaritellum Deflandre 1972AA05
              `--T. imitatumAA05

*Type species of generic name indicated

References

[AA05] Afanasieva, M. S., E. O. Amon, Y. V. Agarkov & D. S. Boltovskoy. 2005. Radiolarians in the geological record. Paleontological Journal 39 (Suppl. 3): S135–S392.