Actinocyclus normanii, copyright Kristian Peters.

Belongs within: Mediophyceae.
Contains: Auliscus.

The Actinodiscaceae are a group of centric diatoms with radially ribbed valves.

| |--SynedetocystisEB93
| |--SyndetoneisEB93
| `--RutilariaCW59
| |--R. epsilon Grev. 1863CW59
| |--R. lanceolataCW59
| |--R. monile [=Pseudorutilaria monile]CW59
| |--R. pulchra A.S. 1893CW59
| `--R. radiataCW59
`--Eupodiscoideae [Actinodiscaceae, Anguliferae, Eupodisceae]EB93
|--Cosmiodiscus elegansW61
|--Grovea pedalisEB93, H04
| |--E. argusG64
| `--E. californicusM01
| |--O. auritaH04
| |--O. mobiliensis [=Biddulphia mobiliensis]RA05
| `--O. sinensisC-SC06
`--Triceratium Ehrenberg 1841EB93, G75
|--T. alternansG75 [=Biddulphia alternansM01]
| |--T. a. var. alternansM01
| `--T. a. var. tenuipunctatum [=Biddulphia alternans var. tenuipunctata]M01
|--T. antediluvianumG75 (see below for synonymy)
|--T. archangelskianumP98
|--T. arcticum [=Biddulphia arctica]M01
| |--T. a. var. arcticumM01
| `--T. a. var. tetragonum [=Biddulphia arctica var. tetragona]M01
|--T. armatumG64
|--T. brightwelliiG64
|--T. comtumG64
|--T. crenatumG64
|--T. digitaleH04
|--T. exiguumG64
|--T. favusG75
|--T. intricatum [incl. T. undulatum]G64
|--T. mirificumH04
|--T. montereyi [=Biddulphia montereyi]M01
|--T. moronenseH04
|--T. pentacrinusH04
|--T. pileolus [incl. T. obtusum]G64
|--T. reticulatumG75
|--T. robertsianumH04
|--T. sanpedroanum [=Biddulphia (Triceratium) sanpedroana Mereschkowsky 1901]M01
|--T. schulziiEB93
|--T. striolatum [incl. T. membranaceum]G64
`--T. uncinnatum [=Biddulphia uncinnata]M01

Triceratium antediluvianumG75 [=Amphitetras antediluvianaG75, Biddulphia antediluvianaM01; incl. A. tessellataM01, B. tessellataM01]

*Type species of generic name indicated


[C-SC06] Cavalier-Smith, T., & E. E.-Y. Chao. 2006. Phylogeny and megasystematics of phagotrophic heterokonts (kingdom Chromista). Journal of Molecular Evolution 62: 388–420.

[CW59] Crosby, L. H., & E. J. F. Wood. 1959. Studies on Australian and New Zealand diatoms. II.—Normally epontic and benthic genera. Transactions of the Royal Society of New Zealand 86 (1): 1–58, pls 1–9.

[EB93] Edwards, D., J. G. Baldauf, P. R. Brown, K. J. Dorning, M. Feist, L. T. Gallagher, N. Grambast-Fessard, M. B. Hart, A. J. Powell & R. Riding. 1993. ‘Algae’. In: Benton, M. J. (ed.) The Fossil Record 2 pp. 15–40. Chapman & Hall: London.

[G75] Giffen, M. H. 1975. An account of the littoral diatoms from Langebaan, Saldanha Bay, Cape Province, South Africa. Botanica Marina 18: 71–95.

[G64] Gray, J. E. 1864. Handbook of British Water-weeds or Algae. R. Hardwicke: London.

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

[M01] Mereschkowsky, C. 1901. A list of Californian diatoms (concluded). Annals and Magazine of Natural History, series 7, 7: 505–520, pls 4–5.

[P98] Prothero, D. R. 1998. Bringing Fossils to Life: An introduction to paleobiology. WCB McGraw-Hill: Boston.

[RA05] Rath, J., & S. P. Adhikary. 2005. A check list of algae from Chilika Lake, Orissa. Bulletin of the Botanical Survey of India 47: 101–114.

[W61] Wood, E. J. F. 1961. Studies on Australian and New Zealand diatoms. V.—The Rawson Collection of recent diatoms. Transactions of the Royal Society of New Zealand 88 (4): 699–712.

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