Figure F17. Different abundance estimations for all major groups of fossils. Sea ice diatoms considered include Thalassiosira antarctica spores, Bacteriosira fragilis, Thalassiosira hyaline, Fragilariopsis cylindrus, and Detonula confervacea. For foraminifer abundance estimations, see "Biostratigraphy" in the "Methods" chapter. B = barren, P = present, R = rare, F = few, C = common, A = abundant, D = dominant.
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