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Actinocyclus normannii.jpeg
Actinocyclus normanii, a diatom from the family Hemidiscaceae
Scientific classification
Domain: Eukaryota
(unranked): SAR
Superphylum: Heterokonta
Phylum: Bacillariophyta
Class: Coscinodiscophyceae
Suborder: Coscinodiscineae

Coscinodiscophycidae or Coscinodiscineae is a grouping of Coscinodiscophyceae, previously known as "Centrales", a paraphyletic order of centric diatoms, a major group of algae and one of the most common members of the phytoplankton.[1]


Valves generally have a marginal ring of processes. They usually have symmetry with no polarities.[1]

See also[edit]


  1. ^ a b Tomas, Carmelo R., ed. (1997). Identifying Marine Phytoplankton. Academic Press. ISBN 978-0-08-053442-8.