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Haptophyceae: Isochrysidales: Derepyxidaceae
Prymnesiida:

Spongomonas intestinum
(Cienkowski) Kent
Syn.: Phalansterium intestinum Cienkowski

Spongomonas Family: Two long flagella, 1-2 chloroplasts and 1-2 contractile vacuoles present (Starmach, 1985).
Genus: Cell body naked, colorless (without chloroplasts), a contractile vacuole present, colony embedded in a gelatinous matrix of various shape (Starmach, 1985).
Species: colony within a gelatinous matrix straight or curved (Starmach, 1985).

Spongomonas intestinum (Cienkowski) Kent, cell body spherical 6-7 μm in diam., with two flagella of equal length (about 31 μm long), x 100, x 200, x 400, x 640, Saitama Pref., Japan, May 27, 1999 by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Spongomonas Spongomonas Spongomonas Spongomonas Spongomonas
Spongomonas Spongomonas Spongomonas Spongomonas Spongomonas
Spongomonas Spongomonas

cf. Uroglena Ehrenberg: With connecting processes (Kudo, 1966).

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