Difference between revisions of "Carina"

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(Created page with "'''CARINA '''- a peripheral thickening of the shell. May be doubled in Cretaceous planktic foraminifera. In bilamellar foraminifera formed exclusively by the outer lamella and...")
 
 
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'''CARINA '''- 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.
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[[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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'''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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==Definition==
  
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*''according to Hottinger (2006):''
  
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'''CARINA''' - (=[[keel]]) is a peripheral thickening of the shell. May be doubled in Cretaceous planktic foraminifera.
Comments:
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In bilamellar foraminifera formed exclusively by the outer lamella and therefore imperforate.
  
  
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==See also==
From:
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* [[keel]]
Hottinger (2006), Illustrated glossary of terms used in foraminiferal research. Carnets de Géologie, Memoir 2, ISSN 1634-0744.
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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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See also:
 
* [[keel]]
 
  
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Latest revision as of 00:11, 30 December 2018