Cibicides sp.

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found in material provided by John  from the Purse State Park, Maryland, USA
Aquia Formation, Thanetian, Paleocene      

Spiral to apertural view of a specimen of Cibicides sp.

SEM picture taken together with Dr. Rosenfeldt
head of the Mikrobiologische Vereinigung

The classification is based upon: Cushman, J, 1951: Paleocene foraminifera of the Gulf Coastal region of the United States and adjacent areas, U.S. Geological Survey professional paper 232, Plate 19

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