Key to Species
Forams photographed with ESEM by David Clark
David is a hobby-paleontologist from Michigan and I am very grateful for his valuable contribution shooting images fom samples I sent to him.
Calvert Cliffs, Choptank Formation Bed 17
, Maryland, USA
38.61 N 76.51 E
Serravallian, Middle Miocene
Uvigerina cf. calvertensis