- according to Hottinger (2006):
PIGEON-HOLE – an alveolar cavity in the exoskeletal polygonal network that expands at its blind end below the epiderm into a polygonal shape. Its opening into the chamber cavity is delimited by longer beams (perpendicular to the septum) and by shorter rafters (parallel to the septum).
Hottinger (2006), Illustrated glossary of terms used in foraminiferal research. Carnets de Géologie, Memoir 2, ISSN 1634-0744.
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