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Rhopalastrum profunda (Ehrenberg, 1854)

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The arms and the patagium consist of different spongy meshwork. As in Rhopalastrum sp. aff. pentagona, the chambered rings are about 7-10µm high. The difference from R. mülleri described by Nigrini is in the outline of the arms: in the R. profunda group they are broader toward the end, while in R. furcata they are of nearly the same breadth from the base to the end.
Petrushevskaya and Kozlova 1972


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