About: Staffelegg Formation
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The Staffelegg Formation (German: Staffelegg-Formation, French: Formation de la Staffelegg, Italian: Formazione della Staffelegg) is a formation of Early Jurassic age (late Hettangian to early Toarcian stages) in the Canton of Aargau of northern Switzerland. The siltstones, marls, limestones and intermittent sandstones of the formation were deposited on the (NTCP). The Staffelegg Formation has provided fossils of the ichthyosaur Eurhinosaurus longirostris and the ammonite Catacoeloceras raquinianum.