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Centropyxis constricta
Centropyxis constricta
Centropyxis constricta

Centropyxis constricta  (Ehrenberg, 1841) Penard, 1890

Diagnosis: shell of medium size, very variable in size and shape, usually more than 100 µm in length, elliptical or sometimes broad ovoid in front view, more or less flattened; aperture at the border of the shell, eccentric, largely elliptic or nearly circular, deeply invaginated; shell covered with closely-set sand grains and/or diatoms, giving a grey color to the test; fundus sometimes with some larger mineral grains.

Dimensions: literature 90-150 µm

Ecology: mosses and Sphagnum.

Centropyxis constricta Penard
After Deflandre, 1929
Centropyxis constricta
Centropyxis constricta
C. constricta, lateral view
The same shell in ventral view
Centropyxis constricta
Centropyxis constricta
C. constricta, lateral view
The same shell in ventral view
Centropyxis constricta
Centropyxis constricta
Centropyxis constricta
Centropyxis constricta
Centropyxis constricta side view
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