Mercenaria campechiensis tridacnoides (fossil clam)
Pliocene epoch (5.3 to 2.5 mya)
North America, United States, Virginia
Museum purchase/Kibler Collection
Traces of Time: Fossils from the Collection
July 25, 2009 to October 24, 2010
The sea level of the Atlantic Ocean has fluctuated over time. As the climate warmed and polar ice caps melted, the Atlantic trangressed onto the land, depositing thick marine sediments. During cooler times, the ice caps reformed, and the ocean retreated from the land.
Containing millions of shelled invertebrates, marine sediments can be found in dozens of rocky outcrops throughout Virginia, including sites near Richmond. These Aurinia and Mercenaria shells are from the “Lone Star”
fossil site in Suffolk, Virginia, but are from different ages.ges.
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