Impressamergel Formation

The Impressamergel formation includes dark gray to light gray limestones with some embedded limestone beds. The lower limit is relatively well defined by the change in color (from "brown" to "white" Jura). The upper limit is formed by the onset of the limestone of the Wohlgeschichtete Kalk Formation . It meshes with the Lochen Formation especially in the higher part and is increasingly replaced by this formation. In the Upper Rhine Valley, it is represented by Kandern Formation, Korallenkalk Formation and Nerineenkalk Formation . The distribution of the Impressamergel formation extends over the entire Swabian Alb to the Wutach area.

• List of fossiliferous stratigraphic units in Germany

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 25 March 2022. Retrieved 17 December 2021.

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