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Rotalipora
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Globigerinacea
Family:
Rotaliporidae
Subfamily:
Rotaliporinae
Formal Genus Name and Reference:
Rotalipora BROTZEN, 1942, *240, p. 32
Type Species:
R. turonica, = Globorotalia cushmani MORROW, 1934, *1319, p. 199, OD
Images
(Click to enlarge in a new window)
Fig. 528,1,2. *R. cushmani (MORROW); 1a-c, spiral, umbilical, and edge views, topotype of form described as R. turonica BROTZEN, Cenoman., ?Turon., Ger.-Pol. (Pomerania) ; 2a-c, spiral, umbilical, and edge views of topotype of R. ellSh- malli (MORROW), Cenoman., USA(Kans.), X63 (*1183). -- Fig. 528,3,4. R. greenhornwsis (MORROW); 3a-c, Cenoman., N.Afr.(Algeria); opposite sides and edge view of topotype of Thalmanninella brotzelli SIGAL, X75; 4a-c,
Cenoman., USA(Kans.), opposite sides and edge
view of topotype, X60 (°1183)
Synonyms
Thalmanninella
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.(Cenoman.-?Turon.)
Beginning International Stage:
Cenomanian
Fraction Up In Beginning Stage:
0
Beginning Date:
100.5
Ending Stage in Treatise Usage:
U.Cret.(Cenoman.-?Turon.)
Ending International Stage:
Turonian
Fraction Up In Ending Stage:
100
Ending Date:
89.39
Description
Test free, trochospiral, biconvex to planoconvex, umbilicate, periphery angular, with single keel, chambers angular-rhomboid, sutures curved on spiral side, depressed to elevated, and may be thickened or beaded, on umbilical side radial to slightly curved, flush to depressed, wall calcareous, perforate, radial in structure, surface smooth to nodose; primary aperture interiomarginal and extraumbilical-umbilical in position with bordering lip, single secondary sutural aperture per suture on umbilical side, or rarely 2 or more per suture, commonly also with bordering lip or thickened rim. [BOLLI, LOEBLICH & TAPPAN (1957, *164) included with this genus both the typically keeled species and the nonkeeled forms described as Ticinella by REICHEL (1950, °1522). The latter is here recognized as a distinct genus, characterized by the absence of a keel or poreless margin.]
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Globigerinacea
Family:
Rotaliporidae
Subfamily:
Rotaliporinae
Formal Genus Name and Reference:
Rotalipora BROTZEN, 1942, *240, p. 32
Type Species:
R. turonica, = Globorotalia cushmani MORROW, 1934, *1319, p. 199, OD
Images
(Click to enlarge in a new window)
Fig. 528,1,2. *R. cushmani (MORROW); 1a-c, spiral, umbilical, and edge views, topotype of form described as R. turonica BROTZEN, Cenoman., ?Turon., Ger.-Pol. (Pomerania) ; 2a-c, spiral, umbilical, and edge views of topotype of R. ellSh- malli (MORROW), Cenoman., USA(Kans.), X63 (*1183). -- Fig. 528,3,4. R. greenhornwsis (MORROW); 3a-c, Cenoman., N.Afr.(Algeria); opposite sides and edge view of topotype of Thalmanninella brotzelli SIGAL, X75; 4a-c,
Cenoman., USA(Kans.), opposite sides and edge
view of topotype, X60 (°1183)
Synonyms
Thalmanninella
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.(Cenoman.-?Turon.)
Beginning International Stage:
Cenomanian
Fraction Up In Beginning Stage:
0
Beginning Date:
100.5
Ending Stage in Treatise Usage:
U.Cret.(Cenoman.-?Turon.)
Ending International Stage:
Turonian
Fraction Up In Ending Stage:
100
Ending Date:
89.39
Description
Test free, trochospiral, biconvex to planoconvex, umbilicate, periphery angular, with single keel, chambers angular-rhomboid, sutures curved on spiral side, depressed to elevated, and may be thickened or beaded, on umbilical side radial to slightly curved, flush to depressed, wall calcareous, perforate, radial in structure, surface smooth to nodose; primary aperture interiomarginal and extraumbilical-umbilical in position with bordering lip, single secondary sutural aperture per suture on umbilical side, or rarely 2 or more per suture, commonly also with bordering lip or thickened rim. [BOLLI, LOEBLICH & TAPPAN (1957, *164) included with this genus both the typically keeled species and the nonkeeled forms described as Ticinella by REICHEL (1950, °1522). The latter is here recognized as a distinct genus, characterized by the absence of a keel or poreless margin.]