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Globorotalia

Classification

    Phylum:  
Protista
    Subphylum:  
Sarcodina
    Class:  
Reticularea
    Subclass:  
Granuloreticulosia
    Order:  
Foraminiferida
    Suborder:  
Rotalina
    Superfamily:  
Globigerinacea
    Family:  
Globorotaliidae
    Subfamily:  
Globorotaliinae
    Formal Genus Name and Reference:  
Globorotalia CUSHMAN, 1927, 431, p. 91
    Type Species:  
Pulvinulina menardii (D'ORBIGNY) var. tumida BRADY, 1877, *194, p. 535, OD


Images

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Fig. 533,1. *G. tumida (BRADY). Post-Tert., W.Pac.O.(New Ireland); Ia-c, opposite sides and edge view. X44 (*164). --Flc. 533,2; 534. G. truncatulinoides (D'ORBIGNY), Rec.. .AtI.O.(Canary Is.), (533.2), .PaLO. (Bikini Atoll) (534); 533,2a-c, opposite sides and edge view of topotype, X70 (*164); 534, equal. sec. showing radial bilall1ellar wall structure, X75 (ยท1533). -- Fig. 533,3. G. pseudoscitula GLAESSNER, Paleoc., USA (N.J.) ; 3a-c. opposite sidcs and edge view, X73 (*1174). -- Fig. 533, 4,5. G. membranacea (EHRENBERG), Plio., Eu. (Sicily); 4, lectotype, here designated, enlarged ('680); 5a-c, opposite sides and edge view of topotype, X 79 ('2117)


Synonyms

G. (Truncorotalia)


Geographic Distribution

cosmop


Age Range

    Beginning Stage in Treatise Usage:  
Paleoc.
    Beginning International Stage:  
Danian
    Fraction Up In Beginning Stage:  
0
    Beginning Date:  
66.04
    Ending Stage in Treatise Usage:  
Eoc.
    Ending International Stage:  
Priabonian
    Fraction Up In Ending Stage:  
100
    Ending Date:  
33.9


Description

Test free, trochospiral, periphery carinate, chambers angular, rhomboid, or angular-conical; sutures may be thickened, depressed to elevated; wall calcareous, finely perforate, but with nonporous keel or peripheral band, surface smooth to cancellate or hispid; aperture interiomarginal, an extraumbilical-umbilical arch bordered by lip, varying from narrow rim to broad spatulate or triangular flap.




References



Museum or Author Information