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2.2.2 perforation
perforations are pores in the wall of the test. In classification planktonic foraminifera are grouped into microperforate, finely perforated and macroperforate forms.
 Part systematics  Chapter wall  Section perforation
 
    
finely perforate
The term is used in the classification of planktonic foraminifera, referring to perforations in the test. Forms with pore-diameters between 1µm - 3µm are called finely perforate. They are only visible at higher magnifications of 60+x. Definition and images from Petrizzo et al. 2011
 Part systematics  Chapter wall  Section perforation
 
    
macroperforate
The term is used in the classification of planktonic foraminifera, referring to perforations in the test. Forms with pore-diameters > 3µm are called macroperforate. They are visible at normal magnifications of 20x-40x. Definition and images from Petrizzo et al. 2011
 Part systematics  Chapter wall  Section perforation
 
    
microperforate
The term is used in the classification of planktonic foraminifera, referring to perforations in the test. Forms with pore-diameters < 1µm are called microperforate. The pores are only visible at higher magnifications of 60+x. Definition and images from Petrizzo et al. 2011.
 Part systematics  Chapter wall  Section perforation
 
    
3.1.2 perforation
will be described later / will be described later / will be described later / will be described later
 Part biology  Chapter wall  Section perforation
 
    
pore
pores are small holes in the wall of the test. They are distinguished from the apertures. The pores do not form an open connection between the cell inside and the surrounding environment. Both are separated by an inner organic lining, allowing gas and solute exchange. Only small molecules and nutritional salts can penetrate via the perforation, serving the cell and symbionts inside the test. Rewritten from Boudagher-Fadel 2013.
 Part biology  Chapter wall  Section perforation
 
    


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