View source for Brood chamber

[[File:Fig 24.jpg|thumb|<font size="2">'''Fig. 1.''' Brood chambers in agamonts of '''(A-C)''' ''Sorites orbiculus'' (Forskal) and ('''D-E''') ''Amphisorus hemprichii'' Ehrenberg, all from the Gulf of Aqaba. Recent.
'''A:''' fresh hatching on empty mother shell under water. '''B:''' [[agamont]] shell, dried and split open in the equatorial plane. Some embryos remain in situ in the brood chambers. Note size of microspheric [[proloculus]]. SEM graph. '''C:''' detail of B showing embryo (consisting of [[proloculus]] and [[flexostyle]]) and surface of resorption including the [[organic lining]]. '''D:''' equatorial and '''E:''' axial sections showing an abrupt increase in the irregularity and volume of the chamberlet cavity in the last few chamberlet cycles ('''double arrows''') marking the brood chambers. '''F:''' ''Neorotalia sp.'', thin section parallel to and near the axis of coiling, the last chamber filled with hatchlings. Transparent light micrograph. Spanish Pyrenees, Lower Eocene. '''G:''' ''Orbitolites sp.'' Oblique-centered thin section, transmitted light micrograph. Note the discrepancy between embryo size and brood chamberlet volumes: we are in presence of either a [[gamont]] producing small gametes or zygotes, or of a schizont keeping the offspring in regular broodchambers prior to the first, prolocular shell formation. Lowermost Eocene, Farafrah Oasis, Egypt.
'''br:''' brood chamber; '''e:''' embryo; '''ol:''' [[organic lining]]; '''pr:''' [[proloculus]]; '''s:''' [[septum]]; (Hottinger, 2006; fig. 24 [http://paleopolis.rediris.es/cg/CG2006_M02/index.html] '''CC'''/BY-NC-SA)]]
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==Definition==
*''according to Hottinger (2006):''
'''BROOD CHAMBER''' - chamber(s) or chamberlet cycle(s) with enlarged cavities that house the offspring before hatching. The enlarged chamber cavities may be produced by partial resorption of shell material, in particular of the [[endoskeleton]] and the [[septa]]. To date, brood chambers have been observed exclusively in agamonts (microspheric specimens).





==See also:==
* [[agamont]] 
* [[endoskeleton]]
* [[septa]]
==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 Géologie], [http://paleopolis.rediris.es/cg/CG2006_M02/index.html Memoir 2], ISSN 1634-0744                                                              
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