Echinodiscus A.Mann, 1925
Holotype species: Echinodiscus vermiculatus A.Mann
Currently accepted name for the type species: Spinodiscus vermiculatus (A.Mann) Desikachary & Ranjitha
Original publication and holotype designation: Mann, A. (1925). Marine diatoms of the Philippine Islands. Bulletin United States National Museum 100(6, part 1): 1-182, 39 pls.
Request PDFDescription: Valves circular, slightly convex to the elevated rim, then turned vertically to form a deep mantle which finally expands into a narrow hyaline flange, where the valve joins the girdle. The central portion of the valve face irregular, covered with circular markings connected by vermiform lines. Hendey (1939) suggested these vermiform lines on the type specimen were caused by erosion. The elevated rim and mantle of the valve are covered with irregularly shaped spines. One "broad lunate or hemispherical process" is located on the rim. Because Mann (1925) described Echinodiscus from samples dredged near the Philippine Islands, he saw no living specimens. Hendey (1939) described 2 fossil species from marine deposits. No living cells of Echinodiscus have been observed.
Information kindly contributed by M. C. Amspoker but may now be outdated.
Taxonomic status: This name is currently regarded as a synonym of Spinodiscus.
Gender: This genus name is currently treated as masculine.
Most recent taxonomic treatment adopted: Desikachary, T.V. & Ranjitha Devi, R.A. (1986). Marine fossil diatoms from India and Indian Ocean region. Atlas of diatoms 1: 1-8, 77 plates.
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Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,
organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA)
and intended to be published in CD format.
These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above.
The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.
Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.
Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=46794
Citing AlgaeBase
Cite this record as:
E.A. Molinari Novoa in Guiry, M.D. & Guiry, G.M. 28 April 2022. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 19 April 2024
