Figure 9.4. Biostratigraphic ranges for four benthic foraminiferal taxa in Holocene of Chesapeake Bay. Last appearance datum (LAD) for Bolivina ~5000-6000 yr BP; spike in Ammobaculites exiguus ~120-180 yr BP; LAD Buccella frigida 500-600 yr BP; LAD polymorphinids ~600-900 yr BP.

TO RETURN TO REPORT, CLOSE THIS WINDOW.

U.S. Department of Interior, U.S. Geological Survey
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