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Gabonella
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Buliminacea
Family:
Bolivinitidae
Formal Genus Name and Reference:
Gabonella de Klasz, Marie & MEIJER, 1960, 1042, p. 167
Type Species:
G. elongata de Klasz & Meijer, OD
Images
(Click to enlarge in a new window)
Fig. 435, 6,7, *G. elongata, U.Cret.(Maastricht.), Gabon, 6a, b, side and edge views showing twisted test and deeply incised sutures, 7a-c, opposite sides and edge of specimen in which twisting results in nearly quadrate test, apert. tooth visible; all X62 ("2117)
Synonyms
Geographic Distribution
Afr.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.(Santon.)
Beginning International Stage:
Santonian
Fraction Up In Beginning Stage:
0
Beginning Date:
85.7
Ending Stage in Treatise Usage:
U.Cret.(Maastricht.), ?Paleoc.(Dan.)
Ending International Stage:
Danian
Fraction Up In Ending Stage:
100
Ending Date:
61.66
Description
Test free, elongate, biserial, chambers broad and low, plane of biseriality somewhat twisted, sutures strongly depressed, commonly with strong reentrant toward center of chamber margins, wall calcareous, finely perforate, radial in structure, aperture hook-shaped, extending upward from base of final chamber, then curving sharply to run nearly parallel to suture, with narrow bordering lip. [Gabonella differs from Grimsdaleinella in its distinctly twisted test, low hook-shaped aperture, and small tooth, instead of high comma-shaped aperture. It differs from Bolivina in lacking erenulated sutures or retral chamber processes and distinctive tooth plate.]
References
$\qquad$ Marie, Pierre, \& Meijer, M., 1960, Gabonella, nov. gen., un nouveau genre de Foraminifères du Crétacé supérieur et du Tertiaire basal de l'Afrique Occidentale: Revue Micropaléont., v. 3, no. 3, pl. 167-182, pl. 1-2.
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Buliminacea
Family:
Bolivinitidae
Formal Genus Name and Reference:
Gabonella de Klasz, Marie & MEIJER, 1960, 1042, p. 167
Type Species:
G. elongata de Klasz & Meijer, OD
Images
(Click to enlarge in a new window)
Fig. 435, 6,7, *G. elongata, U.Cret.(Maastricht.), Gabon, 6a, b, side and edge views showing twisted test and deeply incised sutures, 7a-c, opposite sides and edge of specimen in which twisting results in nearly quadrate test, apert. tooth visible; all X62 ("2117)
Synonyms
Geographic Distribution
Afr.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.(Santon.)
Beginning International Stage:
Santonian
Fraction Up In Beginning Stage:
0
Beginning Date:
85.7
Ending Stage in Treatise Usage:
U.Cret.(Maastricht.), ?Paleoc.(Dan.)
Ending International Stage:
Danian
Fraction Up In Ending Stage:
100
Ending Date:
61.66
Description
Test free, elongate, biserial, chambers broad and low, plane of biseriality somewhat twisted, sutures strongly depressed, commonly with strong reentrant toward center of chamber margins, wall calcareous, finely perforate, radial in structure, aperture hook-shaped, extending upward from base of final chamber, then curving sharply to run nearly parallel to suture, with narrow bordering lip. [Gabonella differs from Grimsdaleinella in its distinctly twisted test, low hook-shaped aperture, and small tooth, instead of high comma-shaped aperture. It differs from Bolivina in lacking erenulated sutures or retral chamber processes and distinctive tooth plate.]
References
$\qquad$ Marie, Pierre, \& Meijer, M., 1960, Gabonella, nov. gen., un nouveau genre de Foraminifères du Crétacé supérieur et du Tertiaire basal de l'Afrique Occidentale: Revue Micropaléont., v. 3, no. 3, pl. 167-182, pl. 1-2.