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Fig. 9 | Swiss Journal of Palaeontology

Fig. 9

From: Geochemical evidence (C and Sr isotopes) for methane seeps as ammonite habitats in the Late Cretaceous (Campanian) Western Interior Seaway

Fig. 9

87Sr/86Sr isotope ratios in well-preserved mollusc shells from methane seep at AMNH loc. 3528 (B. compressus Zone). Values are less elevated above the coeval seawater ratio (shown as solid horizontal line; McArthur et al. 1994) than at AMNH loc. 3418 (Fig. 8). Carbon isotope data for the same specimens are shown in Fig. 7 (top panel)

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