Bolivina cf. marginatafound in Bed 13 of the Calvert Formation, Calvert Cliffs, Maryland, USA
in material provided by Yasemin Tulu, John Nance and S. Godfrey from
Calvert Marine Museum lower Miocene Taxon Profile
Apertural view of one specimen of Bolivina cf. marginata
SEM picture taken together with Dr. Rosenfeldt
head of the Mikrobiologische Vereinigung
The classification is based upon: Snyder, S. W., V. J. Waters, and T. T. Moore 1988.
Benthic foraminifera and paleoecology of Miocene Pungo River Formation sediments
in Onslow Bay, North Carolina continental shelf. In Micropaleontology of Miocene Sediments in the Shallow Subsurface
of Onslow Bay, North Carolina Continental Shelf, ed. S.
W. Snyder. Cushman Foundation for Foraminiferal Research, Special Publication 25:43-96 Plate 9, Fig. 12+13