Sphaerellaria

Inanihella bakanasensis, from Afanasieva et al. (2005).

Belongs within: Radiozoa.

The Sphaerellaria are a group of radiolarians bearing a globular, porous shell (Afanasieva et al. 2005).

Characters (from Afanasieva et al. 2005): Homoaxonic, radial-rayed, with globular porous skeleton, inner frame formed by sphere, spicule or microsphere.

<==Sphaerellaria [Sphaeroidea]AA05
    |--Anakrusidae [Anakrusata, Anakrusoidea]AA05
    |    |--Aulielina Nazarov 1977AA05
    |    `--Anakrusa Nazarov 1977AA05
    |         `--A. myriacanthaAA05
    `--InaniguttataAA05
         |--InaniguttidaeAA05
         |    |--Inanibigutta Nazarov & Ormiston 1990 [Inanibiguttinae]AA05
         |    |    `--I. aksakensisAA05
         |    `--Inanigutta Nazarov & Ormiston 1984 [Inaniguttinae]AA05
         |         |--I. eiklaensisAA05
         |         |--I. elongataAA05
         |         `--I. unicaAA05
         `--OriundoguttidaeAA05
              |--Inanihella Nazarov & Ormiston 1984 [Inanihellinae]AA05
              |    |--I. akzhalaMB07
              |    |--I. bakanasensisAA05
              |    `--I. tarangulicaNL12
              `--OriundoguttinaeAA05
                   |--Zadrappolus Furutani 1990AA05
                   `--Oriundogutta Nazarov & Ormiston 1990AA05
                        `--O. ramificansAA05

*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.

[MB07] Maletz, J., & D. L. Bruton. 2007. Lower Ordovician (Chewtonian to Castlemainian) radiolarians of Spitsbergen. Journal of Systematic Palaeontology 5 (3): 245–288.

[NL12] Noble, P. J., A. C. Lenz, C. Holmden, M. Masiak, M. K. Zimmerman, S. R. Poulson & A. Kozłowska. 2012. Isotope geochemistry and plankton response to the Ireviken (earliest Wenlock) and Cyrtograptus lundgreni extinction events, Cape Phillips Formation, Arctic Canada. In: Talent, J. A. (ed.) Earth and Life: Global biodiversity, extinction intervals and biogeographic perturbations through time pp. 631–652. Springer.

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