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Guembelitriella graysonensis (Tappan, 1940)       

Class: Rotaliata  Subclass: Globigerinana  Order: Heterohelicida  Family: Guembelitriidae

found in material from the Miscellaneous Localities   American South   USA   
Denton County, Texas

Geological Time: Cretaceous  Upper Cretaceous  Cenomanian


the SEM image is provided by Dr. M. Dan Georgescu

View of a specimen of Guembelitriella graysonensis (Tappan, 1940)


The identification is based upon:
Georgescu, M. D., 2009: On the origins of Superfamily Heterohelicacea Cushman, 1927 and the polyphyletic nature of planktic foraminifera. Revista Española de Micropaleontología, 41 (1-2). page 107-144. Plate 2, Fig. 1

           

dataset number: FEU-1015548
           

Citation:
Georgescu, M. D., 2009: On the origins of Superfamily Heterohelicacea Cushman, 1927 and the polyphyletic nature of planktic foraminifera. Revista Española de Micropaleontología, 41 (1-2). page 107-144. Plate 2, Fig 1