Foraminifera by:    Genus     Locality    Fossil    Query    Calcarina hispida, Foraminifera Dentalina globifera, Foraminifera Uvigerina peregrina, Campos, Brazil, Foraminifera Flag german      Key to Species    Articles     About     

Foraminifera.eu Glossary by Subject    by alphabet    contents only
created and filled by Brian Ottway, Michael Hesemann and Werner Baubkus.
under construction

Part:
Chapter: Section: Term:
test
        Clear

2.4 aperture
The opening in the last chamber of a foraminifera is called aperture. There may be one or several openings. Due to the various possible positions of the aperture and the multiple shapes of it, the aperture is a very relevant morphological criteria for the determination of a foraminifera.
 Part systematics  Chapter aperture  Section
 
    
2.4.1 position of the aperture
 Part systematics  Chapter aperture  Section position of the aperture
 
    
aperture not visible
the aperture is not visible
 Part systematics  Chapter aperture  Section position of the aperture
 
    
areal (=within front wall)
the aperture is positioned in the distal wall, not on a suture
 Part systematics  Chapter aperture  Section position of the aperture
 
    
basal interiomarginal
the aperture is located at the sutur between primary and the preceeding chamber
 Part systematics  Chapter aperture  Section position of the aperture
 
    
extraumbilical
the aperture is in the primary chamber of a coiled shell, but not connected with the umbilicus
 Part systematics  Chapter aperture  Section position of the aperture
 
    
no primary, but multiple apertures
the aperture is build by two or more openings, may be not only in the primary chamber
 Part systematics  Chapter aperture  Section position of the aperture
 
    
terminal
aperture is located at the distal position of an tubular or elongated chamber
 Part systematics  Chapter aperture  Section position of the aperture
 
    
umbilical
the aperture is located in the umbilicus
 Part systematics  Chapter aperture  Section position of the aperture
 
    
umbilical-extraumbilical
the aperture is located on the interior margin of the primary chamber of a coiled shell and extends from the umbilicus to the periphery
 Part systematics  Chapter aperture  Section position of the aperture
 
    
2.4.2 aperture form
 Part systematics  Chapter aperture  Section aperture form
 
    
arcuate lunear arch
the aperture is formed like the lunear arch
 Part systematics  Chapter aperture  Section aperture form
 
    
cribate
aperture is build by several openings giving the impression of a sieve
 Part systematics  Chapter aperture  Section aperture form
 
    
oval - reniform
the aperture is oval or shaped like a kidney
 Part systematics  Chapter aperture  Section aperture form
 
    
pores in rows
aperture is build by several openings arranged in rows
 Part systematics  Chapter aperture  Section aperture form
 
    
radiate
the aperture is formed radiate
 Part systematics  Chapter aperture  Section aperture form
 
    
round
the aperture is circular
 Part systematics  Chapter aperture  Section aperture form
 
    
short slit and alike
the aperture is formed like (short) slit
 Part systematics  Chapter aperture  Section aperture form
 
    


Press the search button
If you have no matches, use less criteria

If you have too many matches, add one criteria

The search-results are limited to 300 images.



.