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Bigenerina
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Textulariina
Superfamily:
Lituolacea
Family:
Textulariidae
Subfamily:
Textulariinae
Formal Genus Name and Reference:
Bigenerina D'ORBIGNY, 1826, *1391, p. 261
Type Species:
B. nodosaria, SD CUSHMAN, 1911, *404b, p. 27
Images
(Click to enlarge in a new window)
Fig. 165,13. *B. nodosaria, Rec., Eu.(Fr.), 13a,b, side, top views, X35 (*2117). --Fig. 165,14. B. sp., long. sec., showing simple agglutinated wall and change in apert. position with growth, enlarged (*401)
Synonyms
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
Jur.
Beginning International Stage:
Hettangian
Fraction Up In Beginning Stage:
0
Beginning Date:
201.36
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test free, elongate, early portion biserial with basal aperture as in Textularia, later uniserial with terminal and rounded aperture
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Textulariina
Superfamily:
Lituolacea
Family:
Textulariidae
Subfamily:
Textulariinae
Formal Genus Name and Reference:
Bigenerina D'ORBIGNY, 1826, *1391, p. 261
Type Species:
B. nodosaria, SD CUSHMAN, 1911, *404b, p. 27
Images
(Click to enlarge in a new window)
Fig. 165,13. *B. nodosaria, Rec., Eu.(Fr.), 13a,b, side, top views, X35 (*2117). --Fig. 165,14. B. sp., long. sec., showing simple agglutinated wall and change in apert. position with growth, enlarged (*401)
Synonyms
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
Jur.
Beginning International Stage:
Hettangian
Fraction Up In Beginning Stage:
0
Beginning Date:
201.36
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test free, elongate, early portion biserial with basal aperture as in Textularia, later uniserial with terminal and rounded aperture