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Dinophyceae: Peridiniales: Peridinaceae
Dinoflagellida: Diniferina: Peridiniidae

 Peridinium cunningtonii
(Lemmermann) Lemmermann, 1910

Peridinium Genus (Ehrenberg): Body round to polygonal; cingulum median, deep; thecal plates 5-6 in cingulum; some with apical and antapical horn (Illustrated Guide, 1985). Epicone (or epitheca) consists of 11-14 thecal plates; hypocone (or hypotheca) of 7-8 thecal plates (Illustrations of The Japanese Fresh-water Algae, 1977).
Species:

Peridinium cunningtonii (Lemmermann) Lemmermann, 1910 ?, cell body 32 μm long, 24 μm wide, x 400, x 640, Dewa Park, Koshigaya, Saitama Pref., Japan, July 2001 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Peridinium Peridinium Peridinium Peridinium Peridinium

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