Globigerina sp.found in Bed 10 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
View of one specimen of Globigerina sp.
SEM picture taken together with Dr. Rosenfeldt
head of the Mikrobiologische Vereinigung
The classification is based upon: Loeblich and Tappan, Treatise on Invertebrate Paleontology, Part C: