Figure AF1. 87Sr/86Sr values of samples from the La Luna Formation in the Las Henández Section, Venezuela (large circles) plotted against the Turonian-Maastrichtian part of the LOWESS curve of McArthur et al. (2001). See the "Appendix," for discussion and Zapata et al. (in press) for details of stratigraphy. Dashed line refers to the oldest age indicated by Sr isotope values.

Figure AF1. ⁸⁷Sr/⁸⁶Sr values of samples from the La Luna Formation in the Las Henández Section, Venezuela (large circles) plotted against the Turonian-Maastrichtian part of the LOWESS curve of McArthur et al. (2001). See the "Appendix" for discussion and Zapata et al. (in press) for details of stratigraphy. Dashed line refers to the oldest age indicated by Sr isotope values.