- according to Hottinger (2006):
SEPTUM - (French: cloison) is a wall separating two consecutive main chamber lumina, i.e. the portion of the free chamber wall that is covered by subsequent chambers and thus incorporated in the architecture of the shell as a partition between successive main chamber lumina. The connection between them is assured by one or many openings in the septum (intercameral foramina, stolon systems) that are in most cases converted primary apertures. When multiple chamberlets form simultaneously the septum may consist of many discrete parts acting as partitions between the lumina of successive chamberlet cycles (not of neighbouring chamberlets).
Hottinger (2006), Illustrated glossary of terms used in foraminiferal research. Carnets de Géologie, Memoir 2, ISSN 1634-0744
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