Actinommata

Actinomma mediterranensis, from Hollande & Enjumet (1960).

Belongs within: Astroentactiniidae.

The Actinommata are a group of radiolarians known from the Triassic to the present. Their skeleton lacks an internal frame, and possesses an initial microsphere, several internal and external shells and numerous main spines (Afanasieva et al. 2005).

<==ActinommataAA05
    |--Astrosphaeridae [Astrosphaerida, Astrosphaerinae, Cubosphaerida]AA05
    |    |--Arachnosphaera Haeckel 1862AA05
    |    |--Astrospongus Mast 1910AA05
    |    |--Diplosphaera Haeckel 1860AA05
    |    |--Drymosphaera Haeckel 1881AA05
    |    |--Elaphococcus Haeckel 1881AA05
    |    |--Haeckeliella Hollande & Enjumet 1960AA05
    |    |--Haplosphaera Hollande & Enjumet 1960AA05
    |    |--Heliosphaera Haeckel 1860AA05
    |    |--Rhizospongus Mast 1910AA05
    |    |--Thalassoplegma Hollande & Enjumet 1960AA05
    |    |--Cubosphaera Haeckel 1887AA05
    |    |--Anomalacantha Loeblich & Tappan 1961 [=Heteracantha Mast 1910 non Brullé 1834]LT61
    |    |    `--*A. dentata (Mast 1910) [=*Heteracantha dentata]LT61
    |    |--Cladococcus Müller 1856AA05
    |    |    `--C. megacerosAA05
    |    |--Hexancistra Haeckel 1881AA05
    |    |    `--H. quadricuspisH04
    |    |--Rhizoplegma Haeckel 1881AA05
    |    |    `--R. boreale (Cleve 1899)BC98
    |    |--Astrosphaera Haeckel 1887AA05
    |    |    |--A. spinosa (Haeckel 1862)AA05
    |    |    `--A. stellataH04
    |    |--Hexapyramis Squinabol 1903AA05
    |    |--Leptosphaera Haeckel 1887AA05
    |    |--Lychnosphaera Haeckel 1881AA05
    |    `--Porococcus Hollande & Enjumet 1960AA05
    `--+--HeliodiscidaeAA05
       |    |--Excentrococcus Dumitrica 1978AA05
       |    |--Excentrodiscus Hollande & Enjumet 1960AA05
       |    |--Excentrosphaerella Dumitrica 1978AA05
       |    `--Heliodiscus Haeckel 1862AA05
       |         |--H. asteriscusAA05
       |         |--H. echiniscusAA05
       |         |--H. glyphodonH04
       |         `--H. viminalisAA05
       `--Actinommidae [Actinommatinae, Actinommida]AA05
            |--Bolena Hull 1997AA05
            |--Carposphaera Haeckel 1881AA05
            |--Cromyosphaera Haeckel 1881AA05
            |--Mallanites O’Dogherty 1994AA05
            |--Prunopyle Dreyer 1889AA05
            |--Pseudacanthosphaera O’Dogherty 1994AA05
            |--Sphaeropyle Dreyer 1889AA05
            |--Staurosphaeretta Squinabol 1904AA05
            |--Stuermeria Deflandre 1964AA05
            |--Tetracanthellipsis Squinabol 1903AA05
            |--Thecosphaera Haeckel 1881AA05
            |--Cromyomma Haeckel 1862AA05
            |    `--C. circumtextumAA05
            `--Actinomma Haeckel 1860AA05
                 |--A. boreale Cleve 1899BC98
                 |--A. leptoderma (Jørgensen 1900)BC98
                 |    |--A. l. leptodermaBC98
                 |    `--A. l. longispina Cortese & Bjørklund 1998BC98
                 |--A. mediterranensisAA05
                 `--A. trinacrium Haeckel 1862BC98

*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.

[LT61] Loeblich, A. R., Jr & H. Tappan. 1961. Remarks on the systematics of the Sarkodina (Protozoa), renamed homonyms and new and validated genera. Proceedings of the Biological Society of Washington 74: 213–234.

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