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Rugoglobigerina
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Globigerinacea
Family:
Globotruncanidae
Formal Genus Name and Reference:
Rugoglobigerina BRÖNNIMANN, 1952, *228, p. 16
Type Species:
Globigerina rugosa PLUMMER, 1927, *1461, p. 38, OD
Images
(Click to enlarge in a new window)
Fig. 530,3. *R. rugosa (PLUMMER), Maastricht., USA (Tex.) ; 3a-c, opposite sides and edge view, X90 (°164).
Synonyms
Rugoglobigerina
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.(Turon.)
Beginning International Stage:
Turonian
Fraction Up In Beginning Stage:
0
Beginning Date:
93.9
Ending Stage in Treatise Usage:
U. Cret.(Maastricht.}
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Test frec, trochospiral, biconvex, umbilicate, periphery rounded, chambers rounded to spherical, sutures radial to slightly curved on spiral side, radial on umbilical side, depressed throughout, wall calcareous, perforate, radial in structure, surface typically rugose, with numerous large pustules which may coalesce into distinct ridges, radiating from mid-point of each chamber on periphery, more rarely smooth; primary apertures interiomarginal, umbilical, in well-preserved specimens covered by tegilla perforated by accessory infralaminal and intralaminal apertures which are only openings to exterior, tegilla tending to be partially or wholly broken out in preservation.
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Globigerinacea
Family:
Globotruncanidae
Formal Genus Name and Reference:
Rugoglobigerina BRÖNNIMANN, 1952, *228, p. 16
Type Species:
Globigerina rugosa PLUMMER, 1927, *1461, p. 38, OD
Images
(Click to enlarge in a new window)
Fig. 530,3. *R. rugosa (PLUMMER), Maastricht., USA (Tex.) ; 3a-c, opposite sides and edge view, X90 (°164).
Synonyms
Rugoglobigerina
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.(Turon.)
Beginning International Stage:
Turonian
Fraction Up In Beginning Stage:
0
Beginning Date:
93.9
Ending Stage in Treatise Usage:
U. Cret.(Maastricht.}
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Test frec, trochospiral, biconvex, umbilicate, periphery rounded, chambers rounded to spherical, sutures radial to slightly curved on spiral side, radial on umbilical side, depressed throughout, wall calcareous, perforate, radial in structure, surface typically rugose, with numerous large pustules which may coalesce into distinct ridges, radiating from mid-point of each chamber on periphery, more rarely smooth; primary apertures interiomarginal, umbilical, in well-preserved specimens covered by tegilla perforated by accessory infralaminal and intralaminal apertures which are only openings to exterior, tegilla tending to be partially or wholly broken out in preservation.