Difference between revisions of "Carina"

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[[File:Fig 29.jpg|thumb|<font size="2">'''Fig.1.'''Carina ([[keel]]).
 
[[File:Fig 29.jpg|thumb|<font size="2">'''Fig.1.'''Carina ([[keel]]).
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'''A-B''': ''Spiroplectammina cf. taiwanica'' (CHANG), apertural view and side view.
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'''A-B''': ''Spiroplectammina cf. taiwanica'' (Chang), apertural view and side view.
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  '''C-E''': ''Paracibicides edomica'' PERELIS et REISS, dorsal (spiral) view, peripheral view and detail of perforation pattern along the peripheral carina on the dorsal surface. Note the interiomarginal, extraumbilical - equatorial position of aperture. All specimens from the Gulf of Aqaba. Recent. SEM graphs.
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  '''C-E''': ''Paracibicides edomica'' Perelis et Reiss, dorsal (spiral) view, peripheral view and detail of perforation pattern along the peripheral carina on the dorsal surface. Note the interiomarginal, extraumbilical - equatorial position of aperture. All specimens from the Gulf of Aqaba. Recent. SEM graphs.
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'''a''': aperture; '''k''': carina (keel); '''p''': pore; (Hottinger, 2006; fig.29 [http://paleopolis.rediris.es/cg/CG2006_M02/index.html]  with permission from the author)]]
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'''a''': [[aperture]]; '''k''': carina ([[keel]]); '''p''': [[pore]]; (Hottinger, 2006; fig. 29 [http://paleopolis.rediris.es/cg/CG2006_M02/index.html]  with permission from the author)]]
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==Definition==
  
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==Definition==
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*''according to Hottinger (2006):''
  
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a peripheral thickening of the shell. May be doubled in Cretaceous planktic foraminifera.  
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'''CARINA''' - (=[[keel]]) is a peripheral thickening of the shell. May be doubled in Cretaceous planktic foraminifera.  
 
In bilamellar foraminifera formed exclusively by the outer lamella and therefore imperforate.  
 
In bilamellar foraminifera formed exclusively by the outer lamella and therefore imperforate.  
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==Comments==
 
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* [[keel]]
 
* [[keel]]
  
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==References==
  
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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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==Notes==
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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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Latest revision as of 00:11, 30 December 2018