Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Globotruncana
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Globigerinacea
Family:
Globotruncanidae
Formal Genus Name and Reference:
Globotruncana CUSHMAN, 1927, *431, p. 91
Type Species:
Pulvimulina arca CUSHMAN, 1926, *425, p. 23, OD
Images
(Click to enlarge in a new window)
Fig. 529, 1,2. *G. arca (CUSHMAN), L.Maastricht, USA (Tex.); la-c, spiral side, umbilical side with well- preserved tegilla covering entire umbilieal region so as to obscure primary aperture, and edge view; 2, umbilical view, tegilla broken out. exposing prim3ry umbilical aperture; all X70 (*164). -- Fig. 529,3. G. havanensis VOORWIJK, Maastricht., W.Indies(Cuba); 3a-c, opposite sides and edge view, X79 (*2117). -- Fig. 529,4. G. tilevi (BRONNIMANN & BROWN), Maastricht., W.Indies (Cuba); 4a-c, opposite sides and edge view, X79 (*2117)
Synonyms
Rosalinella
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 free, trochospiral, biconvex, spiroconvex or umbilicoconvex, broadly umbilicate, periphery rounded with poreless margin, with single keel or truncate with double keel; chambers ovate, hemispherical, angular rhomboid or angular truncate; sutures on spiral side curved or radial, depressed to elevated, may be limbate and beaded, sutures on umbilical side curved or radial, depressed or more rarely elevated; wall calcareous, perforate, radial in structure, surface smooth, rugose or beaded; primary apertures interiomarginal, umbilical, in well-preserved specimens covered by tegilla, which are perforated by accessory infralaminal and intralaminal apertures that become sole openings to exterior; tegilla commonly partially or wholly broken out in fossilization or preserved only as scalloped fragments.
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:
Globotruncana CUSHMAN, 1927, *431, p. 91
Type Species:
Pulvimulina arca CUSHMAN, 1926, *425, p. 23, OD
Images
(Click to enlarge in a new window)
Fig. 529, 1,2. *G. arca (CUSHMAN), L.Maastricht, USA (Tex.); la-c, spiral side, umbilical side with well- preserved tegilla covering entire umbilieal region so as to obscure primary aperture, and edge view; 2, umbilical view, tegilla broken out. exposing prim3ry umbilical aperture; all X70 (*164). -- Fig. 529,3. G. havanensis VOORWIJK, Maastricht., W.Indies(Cuba); 3a-c, opposite sides and edge view, X79 (*2117). -- Fig. 529,4. G. tilevi (BRONNIMANN & BROWN), Maastricht., W.Indies (Cuba); 4a-c, opposite sides and edge view, X79 (*2117)
Synonyms
Rosalinella
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 free, trochospiral, biconvex, spiroconvex or umbilicoconvex, broadly umbilicate, periphery rounded with poreless margin, with single keel or truncate with double keel; chambers ovate, hemispherical, angular rhomboid or angular truncate; sutures on spiral side curved or radial, depressed to elevated, may be limbate and beaded, sutures on umbilical side curved or radial, depressed or more rarely elevated; wall calcareous, perforate, radial in structure, surface smooth, rugose or beaded; primary apertures interiomarginal, umbilical, in well-preserved specimens covered by tegilla, which are perforated by accessory infralaminal and intralaminal apertures that become sole openings to exterior; tegilla commonly partially or wholly broken out in fossilization or preserved only as scalloped fragments.