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Swiss Journal of Geosciences
Fig. 2 | Swiss Journal of Geosciences

Fig. 2

From: Discussion of the paper by Godet et al. 2011, entitled “Reconciling strontium-isotope and K–Ar ages with biostratigraphy: the case of the Urgonian platform, Early Cretaceous of the Jura Mountains, Western Switzerland” (Swiss Journal of Geosciences, 104, 147–160)

Fig. 2

Established ammonite zonation for the Hauterivian, Barremian and “Lower Aptian”. Stratigraphic ranges of the “Fossils of biostratigraphical importance” according to Godet et al. (2011, Fig. 1) are coloured in red; the ranges documented in the literature cited in Fig. 1 are shown in black. The original list is supplemented by Pachytraga tubiconcha (UB) and Dissocladella hauteriviana (UB), not cited by Godet et al. (2011), but by Blanc-Alétru (1995)

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