Ripley Formation (Braggs, Lowndes County, Alabama)
American South USA
Geological Time: Cretaceous Upper Cretaceous Campanian
the SEM image is provided by Dr.
View of a specimen of Dorbignya cretacea (d'Orbigny, 1840)
The identification is based upon:
Georgescu, M. D., 2013: Evolutionary Classification of the Globotruncanellid and Abathomphalid Planktic Foraminifera (Late Cretaceous, Later Campanian-Maastrichtian). Chapter V of Georgescu, M.D., 2013. Foraminifera: Aspects of Classification, Stratigraphy, Ecology and Evolution. page 129 to 152 Plate n.a., Fig. 1.2-3