View source for Balloon chamber

[[File:Fig 16.jpg|thumb|<font size="2">'''Fig. 1.''' Balloon and float chambers in pseudoplanktic forms. All specimens from the Gulf of Aqaba, Red Sea, Recent. SEM graphs.
'''A-B:''' ''Cymbaloporetta sp.'' Lateral views of dissected specimens. Note tubular infolds of the float chamber canalizing the hatching from the umbilical cavity to the preseptal space under the apertures of the balloon chamber (arrows). '''C-D:''' ''Tetromphalus bulloides'' (d'Orbigny). Lateral views of dissected and intact specimens in their pseudoplanktic stage. '''E-G:''' ''T. bulloides'' in its benthic stage, showing open umbilicus, lateral, umbilical (ventral) and spiral (dorsal) views.
'''a:''' [[aperture]]; '''bch:''' balloon chamber; '''flch:''' float chamber; '''fol:''' [[folium]]; '''u:''' [[umbilicus]]; (Hottinger, 2006; fig. 16 [http://paleopolis.rediris.es/cg/CG2006_M02/index.html] '''CC'''/BY-NC-SA)]]
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==Definition==
*''according to Hottinger (2006):''
'''BALLOON CHAMBER''' -  a hemi- to sub-spherical chamber surrounding a float-chamber in the pseudoplanktic stage of some benthic foraminifera; provided with multiple openings for extrusion of gametes. 
 















==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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