Well-preserved nannofossil and stable isotope records from the mid-Cretaceous of Ocean Drilling Project Leg 171B (western North Atlantic) indicate cyclical, productivity-based variations in surface wa
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Seven Ocean Drilling Program (ODP) sites recovered during ODP Leg 177 in the Atlantic sector of the Southern Ocean were analyzed to study the Pleistocene calcareous nannofossil...
Species abundance: V = very abundant (>10 specimens per field of view at 1560 magnification), A = abundant (1-10 cpescimens per field), C = common (1 specimen per 2-10 fields), F = few (1 specimen