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Globivalvulina
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Fusulinina
Superfamily:
Endothyracea
Family:
Biseriamminidae
Formal Genus Name and Reference:
Globivalvulina Schubert, 1921, *1694, p. 153
Type Species:
Valvulina bulloides BRADY, 1876, *193, p. 89, OD
Images
(Click to enlarge in a new window)
Fig. 255,1,2. *G. bulloides (Brady), U.Penn., USA(Iowa), 1a-c, opposite sides and edge of syntype, X93, 2, sec. of syntype, redrawn (BMNH-P35518, *193, pl. 4, fig. 14), X79 (*2117).
Synonyms
Geographic Distribution
N.Am.-Eu.-C.Asia
Age Range
Beginning Stage in Treatise Usage:
U.Penn.
Beginning International Stage:
Kasimovian
Fraction Up In Beginning Stage:
0
Beginning Date:
307.02
Ending Stage in Treatise Usage:
Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Test free, subglobular to hemispherical when somewhat flattened on broad apertural face, chambers biserially arranged with axis of biseriality planispirally to slightly trochospirally coiled, wall calcareous, microgranular, may have inner fibrous or porous layer particularly well developed along septa, aperture interiomarginal against opposite, penultimate chamber, partially covered by valvular projection extending toward opposite chamber near center of apertural face, commonly overlapping aperture of penultimate chamber. [GlobivalvuIina differs from Biseriammina in being more advanced, with an apertural valvular projection.]
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Fusulinina
Superfamily:
Endothyracea
Family:
Biseriamminidae
Formal Genus Name and Reference:
Globivalvulina Schubert, 1921, *1694, p. 153
Type Species:
Valvulina bulloides BRADY, 1876, *193, p. 89, OD
Images
(Click to enlarge in a new window)
Fig. 255,1,2. *G. bulloides (Brady), U.Penn., USA(Iowa), 1a-c, opposite sides and edge of syntype, X93, 2, sec. of syntype, redrawn (BMNH-P35518, *193, pl. 4, fig. 14), X79 (*2117).
Synonyms
Geographic Distribution
N.Am.-Eu.-C.Asia
Age Range
Beginning Stage in Treatise Usage:
U.Penn.
Beginning International Stage:
Kasimovian
Fraction Up In Beginning Stage:
0
Beginning Date:
307.02
Ending Stage in Treatise Usage:
Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Test free, subglobular to hemispherical when somewhat flattened on broad apertural face, chambers biserially arranged with axis of biseriality planispirally to slightly trochospirally coiled, wall calcareous, microgranular, may have inner fibrous or porous layer particularly well developed along septa, aperture interiomarginal against opposite, penultimate chamber, partially covered by valvular projection extending toward opposite chamber near center of apertural face, commonly overlapping aperture of penultimate chamber. [GlobivalvuIina differs from Biseriammina in being more advanced, with an apertural valvular projection.]