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. A new stratigraphical frame for Kimmeridgian sediments of northwestern Switzerland has been established by correlating seventeen closely spaced sections by means of lithological, sedimentological, and microfacial data as well as by ammonites. This newly established stratigraphical frame is of great value, because these sediments are usually characterised by a prominent sparseness of index-fossils...
In Late Jurassic times, the Swiss Jura carbonate platform occupied the transition between the Paris Basin and the Tethys and thus connects the Boreal and Tethyan realm. Up to now, the lack of index fossils in the Reuchenette Formation prevented a reliable correlation between both areas (its sediments are characterised by a prominent sparseness of index fossils). Now, seven recently in situ collected...
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