160,188 species and infraspecific names are in the database, 22,604 images, 62,254 bibliographic items, 471,478 distributional records.

Helosphaeridium Lister, 1970

Holotype species: Helosphaeridium clavispinulosum Lister

Original publication and holotype designation: Lister, T.R. (1970). The acritarchs and chitinozoa from the Wenlock and Ludlow series of the Ludlow and Millichope áreas, Shropshire. In: Monograph of the Palaentographical Society, London, 1-100. pl. 1-13. (Publ. No. 528, part of Vol. 124 for 1970. ( Eds)

Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as neuter.

Fossil Range notes
Middle Silurian (Ludlovian). - (29 Oct 2020) - M.D. Guiry

Fossil
This is a genus of fossil species, or a genus with a fossil type species, or a genus the type species of which was originally described as a fossil.

Numbers of names and species: There are 4 species names in the database at present.

Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):

Click here to also show infraspecific names in the list below.

Verification of data
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Created: 01 January 2004 by M.D. Guiry

Verified by: 29 October 2020 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=49829

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 05 March 2021.

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