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__FORCETOC__ ==Definition== *''according to Hottinger (2006):'' '''PRIMARY ORGANIC SHEET''' (primary organic membrane auct.) - sheet of spongy organic material between outer and inner lamellae in bilamellar foraminifera. In calcitic foraminifera, the primary organic sheet is usually bounded by rhombic, paired crystals which are different in size and shape from the stacks of platelets forming the major part of the mineralized layers. These crystals are interpreted as the nucleation sites for the biomineralization of both inner and outer primary lamellae on an organic template. Some authors include them in the so-called [[median layer]]. ==See also== * [[bilamellar wall]] * [[median layer]] * [[template]] ==References== Hottinger (2006), [http://paleopolis.rediris.es/cg/CG2006_M02/index.html Illustrated glossary of terms used in foraminiferal research]. [http://paleopolis.rediris.es/cg/uk-index.html Carnets de GĂ©ologie], [http://paleopolis.rediris.es/cg/CG2006_M02/index.html Memoir 2], ISSN 1634-0744. | [[Foraminifera]] | [[EForams-LINKS|FORAM-Links]] | [[CONTRIBUTORS|Contributors]] |
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