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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
(Click to enlarge in a new window)
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
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
(Click to enlarge in a new window)
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.