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Irregularina

Classification

    Phylum:  
Protista
    Subphylum:  
Sarcodina
    Class:  
Reticularea
    Subclass:  
Granuloreticulosia
    Order:  
Foraminiferida
    Suborder:  
Fusulinina
    Superfamily:  
Parathuramminacea
    Family:  
Parathuramminidae
    Formal Genus Name and Reference:  
Irregularina E. V. BYKOVA in BYKOVA & POLENOVA, 1955, *261, p. 21
    Type Species:  
I. karlensis VISSARIONOVA, 1950, *2010, p. 35; OD


Images

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Fig. 226,5. *I. karlensis, Dev.(Givet.), Baskiri; sectioned specimen, X150 (*1509). --Fig. 226, 6. I. nodosa (ANTROPOV), U.Dev.(Frasn.), Tataria; sectioned specimen. X120 (*1509).


Synonyms



Geographic Distribution

C.Asia-USSR(Russian Platfor)


Age Range

    Beginning Stage in Treatise Usage:  
U.Dev.(Givet.)
    Beginning International Stage:  
Givetian
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
385.3
    Ending Stage in Treatise Usage:  
L.Carb. (Tournais.)
    Ending International Stage:  
Tournaisian
    Fraction Up In Ending Stage:  
100
    Ending Date:  
346.73


Description

Test free, cunsisting of single irregular chamber; wall calcareous; aperture at ends of neck like projections.




References



Museum or Author Information