Cyclostephanos

{{Short description|Genus of algae}}

{{Automatic taxobox

|image =

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|taxon = Cyclostephanos

|authority = F.E.Round ex Theriot, Hakansson, Kociolek, Round & Stoermer, 1987

}}

Cyclostephanos is a genus of diatoms belonging to the family Stephanodiscaceae.{{cite web |title=Cyclostephanos F.E.Round ex Theriot, Hakansson, Kociolek, Round & Stoermer, 1987 |url=https://www.gbif.org/species/3193347 |website=www.gbif.org |access-date=18 April 2021 |language=en}}

The genus has cosmopolitan distribution.

Species:

• Cyclostephanos costatus {{small|L.P.Loginova, E.G.Lupikina & G.K.Khursevich, 1984}}
• Cyclostephanos fenestratus {{small|Theriot & Kociolek, 1988}}
• Cyclostephanos gasseae {{small|E.Fourtanier, 1987}}