Figure 2. TEX₈₆ data and calculated SSTs from the Shuqualak–Evans borehole.

Palaeo-SST estimates are based on the TEX₈₆^H calibration14. Note that TEX₈₆ is plotted on a logarithmic scale. The Abathomphalus mayaroensis and Racemiguembilina fructicosa Planktonic Foram Zones cannot be assigned in the Shuqualak–Evans core: A. mayaroensis has not been recorded, probably due to environmental and/or palaeogeographical constraints and base R. fructicosa is recorded in the same horizon as base Pseudoguembelina hariaensis, likely due to the very low Maastrichtian sedimentation rate and not because of a hiatus, since all the nannofossil zones are present. C. plummerae, Contusotruncana plummerae; D. a., Dicarinella asymetrica; G. a., Globotruncana aegyptiaca; G. e., Globotruncanita elevate; G. g., Gansserina gansseri; G. havanensis, Globotruncanella havanensis; L. Ma., Lower Maastrichtian; P. h., Pseudoguembelina hariaensis; P. p., Pseudoguembelina palpebra; R. c., Radotruncana calcarata; S/C, Santonian–Campanian boundary interval; U. Ma., Upper Maastrichtian.