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Actinocyclus normannii.jpeg
Actinocyclus normanii, a diatom from the family Hemidiscaceae
Scientific classification
Domain: Eukaryota
Kingdom: Chromalveolata
Phylum: Heterokontophyta
Class: Bacillariophyceae
Order: Centrales
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, C. R., Hasle G. R., Syvertsen, E. E., Steidinger, K. A., Tangen, K., Throndsen, J., Heimdal, B. R., (1997). Identifying Marine Phytoplankton, Academic Press.