Difference between revisions of "Foraminiferal Organic Lining"

From Foraminifera
Jump to: navigation, search
 
Line 1: Line 1:
  
−
[[Image:FOLs-Fig1.jpg|thumb|right|900px| <font size="2">'''Fig. 1.''' The aperture and the [[apertural face]] (coloured pink) in a biserial form - ''Textularia'' aff. ''goesi'' Cushman. SEM graphs of specimens from the Gulf of Aqaba, Red Sea. Recent. '''A-B''': apertural (A) and peripheral (B) views of an intact specimen. Note the smooth surfaces characteristic of the faces of many [[agglutinated]] forms. '''a''': aperture; '''af''': [[apertural face]]; '''sut''': (chamber) [[suture]] (Hottinger, 2006; fig. 48 [http://paleopolis.rediris.es/cg/CG2006_M02/index.html] '''CC'''/BY-NC-SA)]]
+
[[Image:FOLs-Fig1.jpg|thumb|right|900px| <font size="2">'''Fig. 1.''' Foraminiferal organic linings from (A-L) Middle Jurassic and (M-Y) Upper Cretaceous. All linings belong the Globothalamea class. This figure presents FOLs from (A-L) Pieniny Klippen Belt and (M-Y) Basque–Cantabrian Basin coming from time intervals separated by ca. 100 Ma apart. All organic linings show similar globular growth patterns, however, Jurassic FOLs are larger than Cretaceous ones. (Godos K., Tyszka J., Radmacher W., Goleń J. (2021). Source: eForams.org under Licence '''CC'''/BY-NC-SA)]]
 +
 
 +
 
 
__FORCETOC__
 
__FORCETOC__
−
UNDER CONSTRUCTION
+
 
  
 
==Definition==
 
==Definition==
−
*''according to Hottinger (2006):''
+
*''according to Tyszka et al. (2021):''
−
'''APERTURE''' - the primary opening of the foraminiferal shell cavity towards the ambient environment. May be covered by subsequent chambers and thus transformed into a [[foramen]]. May be masked (see [[mask]]). May be single or multiple.
+
'''FORAMINIFERAL ORGANIC LINING (FOL)''' - a residual organic remnant of foraminifera left after dissolution of its mineral test, usually
 +
following palynological extraction procedures.
  
−
''Remarks'': We insist here on restricting the use of the term "aperture" in chambered shells to the ultimate opening of the last chamber cavity into the ambient environment. When a new chamber is added to the previous one as a main process of growth, the aperture is transformed into a means of communication between successive chamber lumina and thus its function changes. The transformed aperture is called a (intercameral) foramen. Its morphology may change through selective resorption of its margins. Often, the last chamber of the shell is not preserved because of its thin walls (see [[lamellation]]) and the aperture is lost.
+
==See also==
 +
*[[organic lining]]
  
−
==See also==
 
−
*[[accessory aperture]]
 
−
*[[apertural face]]
 
−
*[[apertural plate]]
 
  
 
==References==
 
==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             
+
Godos K., Tyszka J., Radmacher W., Goleń J. (2021). '''Global Database of Foraminiferal Organic Linings: ForamL [https://data.mendeley.com/datasets/xw7w5ns649/2 Version 1.2]''': [[Media:ForamL ver.1.2-2021.pdf]]  <br /> '''DOI:''' https://data.mendeley.com/datasets/xw7w5ns649/2 <br>
 +
 
 +
 
 +
Tyszka J., Godos K., Goleń J., Radmacher W. (2021). Foraminiferal organic linings: Functional and phylogenetic challenges. Published by Elsevier B.V. Available online 26 June 2021, 103726. https://doi.org/10.1016/j.earscirev.2021.103726
 +
         
 
                                               | [[Foraminifera]]  |  [[EForams-LINKS|FORAM-Links]] | [[CONTRIBUTORS|Contributors]]
 
                                               | [[Foraminifera]]  |  [[EForams-LINKS|FORAM-Links]] | [[CONTRIBUTORS|Contributors]]

Latest revision as of 09:29, 15 July 2021