Triospyrididae

Belongs within: Nasellaria.

The Triospyrididae are a group of radiolarians known from the Paleocene to the present (Afanasieva et al. 2005).

Characters (from Afanasieva et al. 2005): Developed differentiation in direction of main heteropolar axis, approximately coinciding with directions of spine A and apical horn. Spines L and D similarly developed and more pronounced than spine l. External feet present. Ante- and postcephalic lobes of cephalis developed when sagittal ring enclosed in cephalis and not projecting to outside. Galear structures may be present.

<==TriospyrididaeAA05
    |--AndrospyridinaeAA05
    |    |--Androspyris Haeckel 1887AA05
    |    `--Lamprospyris Haeckel 1881AA05
    |         `--L. darwiniiAA05
    |--NephrospyridinaeAA05
    |    |--Nephrodictyum Haeckel 1881AA05
    |    |--Psychospyris Riedel & Sanfilippo 1971AA05
    |    `--Nephrospyris Haeckel 1881AA05
    |         `--N. knutheieri Goll & Bjørklund 1985BC98
    |--DipodospyridinaeAA05
    |    |--Dipodospyris Haeckel 1881AA05
    |    |--Gamospyris Haeckel 1881AA05
    |    |--Stephanospyris Haeckel 1881AA05
    |    `--Dorcadospyris Haeckel 1881AA05
    |         `--D. dinocerasH04
    |--ArchiphatninaeAA05
    |    |--Archiphatna Haeckel 1881 (see below for synonymy)AA05
    |    |--Desmospyris Haeckel 1881AA05
    |    |--Patagospyris Haeckel 1881AA05
    |    |--Thamnospyris Haeckel 1881AA05
    |    `--Rhodospyris Haeckel 1881AA05
    |         `--R. tricornisAA05
    |--TholospyridinaeAA05
    |    |--Clathrobursa Haeckel 1881AA05
    |    |--Cyrtostephanus Popofsky 1913AA05
    |    |--Platybursa Haeckel 1881AA05
    |    |--Tridictyopus Haeckel 1881AA05
    |    |--Tristylospyris Haeckel 1887AA05
    |    `--Tholospyris Haeckel 1881AA05
    |         |--T. acuminataAA05
    |         |--T. cupolaH04
    |         `--T. gephyristes Hülsemann 1963BC98
    `--TriospyridinaeAA05
         |--Acrospyris Haeckel 1881AA05
         |--Aegospyris Haeckel 1881AA05
         |--Brachiospyris Haeckel 1881AA05
         |--Cladospyris Ehrenberg 1847AA05
         |--Dictyocircus Jorgensen 1905AA05
         |--Giraffospyris Haeckel 1881AA05
         |--Gorgospyris Haeckel 1881AA05
         |--Hexaspyridium Haeckel 1887AA05
         |--Liriospyris Haeckel 1881AA05
         |--Lophospyris Haeckel 1881AA05
         |--Pentaspyris Haeckel 1881AA05
         |--Petalospyrella Haeckel 1887AA05
         |--Petalospyris Ehrenberg 1847AA05
         |--Semantidium Haeckel 1887AA05
         |--Semantiscus Haeckel 1887AA05
         |--Semantrum Haeckel 1887AA05
         |--Taurospyris Haeckel 1881AA05
         |--Therospyris Haeckel 1881AA05
         |--Triospyrium Haeckel 1887AA05
         |--Anthospyris Haeckel 1881AA05
         |    `--A. mammillataH04
         |--Ceratospyris Ehrenberg 1847AA05
         |    |--C. hyperborea Jørgensen 1905BC98
         |    `--C. strasburgeriH04
         |--Corythospyris Haeckel 1881AA05
         |    `--C. damaecornisAA05
         |--Dendrospyris Haeckel 1881AA05
         |    `--D. polyrrhizaH04
         `--Triceraspyris Haeckel 1887AA05
              |--T. damaecornisH04
              `--T. gazellaH04

Archiphatna Haeckel 1881 [incl. Stephanophaena Haeckel 1887, Stephanophanta Haeckel 1882, Tamnospyris Haeckel 1881]^AA05

*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.

[BC98] Bjørklund, K. R., G. Cortese, N. Swanberg & H. J. Schrader. 1998. Radiolarian faunal provinces in surface sediments of the Greenland, Iceland and Norwegian (GIN) Seas. Marine Micropalaeontology 35: 105–140.

[H04] Haeckel, E. 1899–1904. Kunstformen der Natur. Bibliographisches Institut: Leipzig und Wien.