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

Bulimina elongata, adult
Bulimina elongata, adult
Bulimina elongata, juvenil
Bulimina elongata, Calvert Cliffs, USA
Bulimina elongata, Calvert Cliffs, USA
Bulimina elongata, Calvert Cliffs, USA
Lobatula lobatula
Cribrononion sp.
Florilus cf. grateloupi
Lobatula lobatula, Calvert Cliffs, USA
Cribrononion sp., Calvert Cliffs, USA
Florilus cf. grateloupi, Calvert Cliffs, USA
Florilus chesapeakensis
Nonionella miocenica
Nonionella miocenica
Florilus chesapeakensis, Calvert Cliffs, USA
Nonionella miocenica, Calvert Cliffs, USA
Nonionella miocenica, Calvert Cliffs, USA
Spiroplectinella sp.
Spiroplectinella sp.
Spiroplectinella sp.
Spiroplectinella sp., Calvert Cliffs, USA
Spiroplectinella sp., Calvert Cliffs, USA
Spiroplectinella sp., Calvert Cliffs, USA
Valvulineria floridana
Unknown
Valvulineria floridana, Calvert Cliffs, USA
Unknown, Calvert Cliffs, USA

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