Pseudopolymorphina and the related Polymorphina are common constuents of the mediterranean fauna. There are many variations of shape from flat to almost globular. Many exhibit strange outgrowths from the upper surface that make the test look like a heart with blood vessels emerging. This variant is called the fistulate form. The possibility of many varieties within one species make it often hard to determine a species. On top of that there is still much debate about the taxonomy of forams.

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