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. 2010 Mar 15;107(13):5738–5743. doi: 10.1073/pnas.0910513107

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Fig. 4. — Conceptual diagram of reconstruction for latest Paleocene to earliest Eocene sediments in the Bighorn Basin (WY). The figures are constructed as follows: (A) values as inferred from δ¹³C values of n-C₃₁ alkanes (2), (B) percent of fossil leaves that are angiosperms, (C) mean annual precipitation (MAP) derived from fossil leaf metrics (9, 28), and (D) modeled net Δ_leaf from our Δ_leaf-MAP expressions for evergreen gymnosperm (EG; triangles) and deciduous angiosperm (DA; squares) PFTs (see SI Appendix). Each model was scaled by % angiosperm to derive a net Δ_leaf (dashed line). is denoted with a dashed line on A and is derived from the net Δ_leaf and values. The negative CIE in at the base of the Paleocene-Eocene Thermal Maximum (PETM) is 4.6% (difference between latest Paleocene value and average of initial PETM values). See SI Appendix for discussion of calculations and suggested use of these models.

Inline graphic — Conceptual diagram of reconstruction for latest Paleocene to earliest Eocene sediments in the Bighorn Basin (WY). The figures are constructed as follows: (A) values as inferred from δ¹³C values of n-C₃₁ alkanes (2), (B) percent of fossil leaves that are angiosperms, (C) mean annual precipitation (MAP) derived from fossil leaf metrics (9, 28), and (D) modeled net Δ_leaf from our Δ_leaf-MAP expressions for evergreen gymnosperm (EG; triangles) and deciduous angiosperm (DA; squares) PFTs (see SI Appendix). Each model was scaled by % angiosperm to derive a net Δ_leaf (dashed line). is denoted with a dashed line on A and is derived from the net Δ_leaf and values. The negative CIE in at the base of the Paleocene-Eocene Thermal Maximum (PETM) is 4.6% (difference between latest Paleocene value and average of initial PETM values). See SI Appendix for discussion of calculations and suggested use of these models.