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Elphidiella

Classification

    Phylum:  
Protista
    Subphylum:  
Sarcodina
    Class:  
Reticularea
    Subclass:  
Granuloreticulosia
    Order:  
Foraminiferida
    Suborder:  
Rotalina
    Superfamily:  
Rotaliacea
    Family:  
Elphidiidae
    Subfamily:  
Elphidiinae
    Formal Genus Name and Reference:  
Elphidiella CUSHMAN, 1936, *469, p. 89
    Type Species:  
Polystomella arctica Parker & Jones in BRADY, 1864, *186, p. 471, OD


Images

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Fig. 508,6-8. *E. arctica (PARKER & JONES), Rec., Arctic (6), Alaska (7), N.Atl. (8); 6a,b, side, apert. views, X23 (*2117); 7a,b, side, apert. Views, X26 (*1162); 8, axial sec. showing septal canal, simple sutural septal foramen, and areal openings due to resorption, approx. X50 (*946)


Synonyms



Geographic Distribution

cosmop.


Age Range

    Beginning Stage in Treatise Usage:  
Paleoc.(Dan.)
    Beginning International Stage:  
Danian
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
66.04
    Ending Stage in Treatise Usage:  
Rec.
    Ending International Stage:  
Meghalayan
    Fraction Up In Ending Stage:  
100
    Ending Date:  
0


Description

Test free, planispiral and involute, bilaterally symmetrical with equitant chambers commonly leaving axial umbilical plug which lacks radial canals; sutures with openings to subsutural and vertical canals, generally forming double row of alternating pores along each radial suture, without retral processes, although striate surface ornamentation may be present, consisting of grooves originating at sutural pores and extending onto chamber walls; wall calcareous, radial and laminated in structure; aperture multiple, interioareal, consisting of scattered pores in apertural face.




References



Museum or Author Information