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.