163,859 species and infraspecific names are in the database, 22,783 images, 63,093 bibliographic items, 481,370 distributional records.

Osagia Twenhofel, 1919

Empire Prokaryota
Kingdom Eubacteria
Subkingdom Negibacteria
Phylum Cyanobacteria
Class Cyanophyceae
Subclass Oscillatoriophycidae
Order Oscillatoriales
Family Girvanellaceae

Holotype species: Osagia incrustata Twenhofel

Original publication and holotype designation: Twenhofel, W.H. (1919). Pre-Cambrian and Carboniferous algal deposits. American Journal of Science 48(287): 339-352, 5 figures.
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Taxonomic status: currently regarded as a synonym of Girvanella.

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Krasnopeeva, P.S. (1938). Vodorosli i arkheotsiaty drevnejshikh tolshch Potekhinskogo plansheta Khakassii [Algae and Archaeocyatha of the ancient strata of Potekhinsky square of Khakassia]. Materialy po geologii Krasnojarskogo kraja 1937(3): 1-51, 20 plates. [in Russian]

Taxonomic notes
Osagia and other similar genera represent calcareous deposits of diverse origin (Girvanella and the foraminifera Nubecularia) over a nucleus of organic debris. - (12 Jul 2021) -

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 11 species names in the database at present, as well as 3 infraspecific names. Of the species names, 11 have been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..

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
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

Created: 12 July 2021 by E.A. Molinari Novoa

Verified by: 12 July 2021 by E.A. Molinari Novoa

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=53208

Citing AlgaeBase
Please cite this record as:
E.A. Molinari Novoa in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 20 October 2021.

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