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Geological Time: Cretaceous Upper Cretaceous
the SEM image is provided by Dr.
The identification is based upon:
Georgescu, M. D., 2013: Revised evolutionary systematics of the
Cretaceous planktic foraminifera described by C.G. Ehrenberg micropaleontology, vol. 59, no. 1. pages 1-49. Plate 3, Fig. 1
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