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Fig. 7 | Swiss Journal of Palaeontology

Fig. 7

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

Fig. 7

Values of δ13C (‰ VPDB) in well-preserved shells of baculites (AMNH 64694—top left, and AMNH 63468—bottom) and a nautilid (AMNH 64695—top right) from two seeps (AMNH locs. 3528 and 3418) in the Western Interior Seaway. Preservation in the specimens of baculite and nautilid from AMNH loc. 3528 (top panel) is shown in Fig. 5

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