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Bolivina sp.

found in Bed 19 upper part of the Choptank Formation,  Calvert Cliffs, Maryland, USA  
in material provided by Yasemin Tulu, John Nance and S. Godfrey from
Calvert Marine Museum    Serravallian, Middle Miocene    Taxon Profile

Side view of one specimen of Bolivina sp.

Image taken from specimen, embedded in Canada balsam with light from above

The classification is based upon: Loeblich and Tappan, Treatise on Invertebrate Paleontology, Part C.
   Bolivina sp., Calvert Cliffs, Maryland, USA