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Cryptodifflugia oviformis – 26 and 25 µm long

Cryptodifflugia oviformis Penard, 1902

Diagnosis: Shell ovoid, not of slightly compressed; surface smooth, sometimes covered with some xenosomes; young shells colorless, older shells yellow to deep brown; aperture with a thick collar.

Dimensions: L 14-35 µm, B 8-20 µm.

Ecology: Freshwater, in different water types; usually on waterplants and in Sphagnum. Very common, sometimes abundant.

Remarks: Shell wall is comprised of a thin outer organic layer and a much thicker inner, non-crystalline calcareous layer (Hedley et al. (1977))

Cryptodifflugia oviformis
Cryptodifflugia oviformis
Cryptodifflugia oviformis
Cryptodifflugia oviformis
 
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