CELL FUSIONS

Cells of adjacent filaments (N-S orientated in the images below) are connected by cell fusions (arrows). Click here for an illustration. Another kind of cell connections are the secondary pit connections.

Recent:

Fossil:

Arrows mark the positions where vertical cell walls are interrupted to form a cell fusion (SEM-Sample). In opposite to the Recent example, the original cell walls are leached and cell lumina are filled by sparry calcite (SEM-Sample).

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