Arcellina

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Family Arcellidae

Shell is rigid, radially symmetrical, round, polygonal or dentate in the front view; spherical, hemispherical, flattened or disk-like in lateral view. Shell is completely organic, composed of box-like building units arranged in a single layer and cemented together, resulting in an areolar surface. Shell is transparent, colorless, yellow or brownish. Aperture is located on the ventral side, invaginated (rarely evaginated), circular, polygonal or lobed, often surrounded by small organic rim or a circle of pores. hemispherical, flattened or disk-like in lateral view. Shell is completely organic, composed of box-like building units arranged in a single layer and cemented together, resulting in an areolar surface. Shell is transparent, colorless, yellow or brownish. Aperture is located on the ventral side, invaginated (rarely evaginated), circular, polygonal or lobed, often surrounded by small organic rim or a circle of pores

Family Microchlamyiidae

Shell is proteinaceous, flexible or rigid, finely areolate. Cytoplasm either enclosed in a separate membrane sac with single aperture, attached to the main shell, or the peripheral part of the shell membranous with a single aperture, in which case there is no separate membrane sac between the cell body and shell.

Family Microcoryciidae

Protenaceous, flexible or semi-rigid shells, not areolate; aperture ventral, distinct, variable.

Поиск на других архивах:

Ярославская обл., п. Борок, ИБВВ РАН

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