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Calvert Formation Bed 4-9, Calvert Cliffs, Maryland, USA     38.67 N 76.53 E       Burdigalian, Lower Miocene

Bulimina elongata
d'Orbigny, 1846 
Elphidium 
--- 
Nonionella miocenica
Cushman, 1927 
Spiroplectinella 
--- 
   


Other characteristic microfossils commonly found in this bed:

Diatom: Actinoptychus sp.
Diatom:Coscinodiscus sp.
Diatom:Coscinodiscus sp.
Radiolaria:
Actinoptychus sp., Calvert Cliffs, USA
Coscinodiscus sp., Calvert Cliffs, USA
Coscinodiscus sp., Calvert Cliffs, USA
Radiolaria, Calvert Cliffs, USA