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__FORCETOC__ ==Definition== *''according to Hottinger (2006):'' '''PLANISPIRAL''' CHAMBER ARRANGEMENT - [[chamber]]s arranged in [[whorl]]s where the rate of translation (net rate of movement along the growth axis to the net rate of movement away from the axis) is zero. The spiral and [[umbilical side]]s of the [[test]] are identical and symmetrical with regard to the plane of [[bilateral]] symmetry. ==See also== * [[chamber arrangement]] * [[trochospiral arrangement]] ==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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