Dentalina  sp. 
Class: Nodosariata  Subclass: Nodosariana  Order: Nodosariida  Family: Nodosariidae
   North European Plain   The Netherlands
Geological Time: Paleogene  Oligocene  Rupelian
the image is provided by

raw material provided by Andreas Grant
The identification is based upon:
 Cushman, J., A., 1923: The Foraminifera of the Atlantic Ocean. Part 4. Lagenidae. Bull. U.S. Natl. Mus. 104.  Smithsonian Institution United States National Museum Bulletin 104.  Plate 15, Fig. 
dataset number: FEU-1015138