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Pseudoguembelina

Classification

    Phylum:  
Protista
    Subphylum:  
Sarcodina
    Class:  
Reticularea
    Subclass:  
Granuloreticulosia
    Order:  
Foraminiferida
    Suborder:  
Rotalina
    Superfamily:  
Globigerinacea
    Family:  
Heterohelicidae
    Subfamily:  
Heterohelicinae
    Formal Genus Name and Reference:  
Pseudoguembelina Brönnimann & BROWN, 1953, *234, p. 150
    Type Species:  
Gümbelina excolata CUSHMAN, 1926, *425, p. 20, OD


Images

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Fig. 525,5,6 *P. excolata (CUSHMAN), Maastricht., USA (Tex.); 5, hypotype showing early coil, X155, 6, hypotype showing biserial development throughout and well-developed secondary apertures, X116 (*2117)


Synonyms



Geographic Distribution

N.Am.-W.Indies(Cuba)


Age Range

    Beginning Stage in Treatise Usage:  
U.Cret.
    Beginning International Stage:  
Cenomanian
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
100.5
    Ending Stage in Treatise Usage:  
U.Cret.
    Ending International Stage:  
Maastrichtian
    Fraction Up In Ending Stage:  
100
    Ending Date:  
66.04


Description

Test biserial in adult, rarely with microspheric coil in early stage, chambers subglobular, surface may have longitudinal striae or costae, aperture an interiomarginal arch, extending laterally, secondary sutural apertures may occur near zigzag suture between pairs of chambers




References

$\qquad$ \& Brown, N. K., Jr., 1953, Observations on some planktonic Heterohelicidae from the Upper Cretaceous of Cuba: Cushman Found. Foram. Research, Contrib., v. 4, pt. 4, p. $150-$ 156, text-fig. 1-14.——(235) 1956, Taxonony of the Globotruncanidae: Eclogae geol.


Museum or Author Information