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SEM-images provided by

Jessica W. Spear

U.S. Geological Survey St. Petersburg, Coastal and Marine Science Center
          

from a sediment trap at 700m of water depth in the Northern Gulf of Mexico     recent

find more information in:
Spear, J.W and Poore, R.Z., 2011:
Seasonal flux and assemblage composition of planktic foraminifera from the northern Gulf of Mexico, 2008 - 2009
U.S. Geological Survey Open-File Report 2011-1002, 17 p.
Globorotalia truncatulinoides
(d'Orbigny, 1839) 
Globorotalia truncatulinoides
(d'Orbigny, 1839) 
Globorotalia truncatulinoides
(d'Orbigny, 1839) 
Globorotalia truncatulinoides
(d'Orbigny, 1839)