Keuper n. : The upper division of the European Triassic. See Chart of Geology.

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Taxonomy
beds, Keuper marl, Rhaetic, grey, marls, sandstones, fossils, free encyclopedia, Triassic, stone, south Germany, central Europe, Great Britain, gypsum, rock salt, rock strata, Jurassic strata, the Pyrenees.

Defination from the web:
Keuper is a lithostratigraphic unit (a sequence of rock strata) in the subsurface of large parts of west and central Europe. The Keuper consists of dolostone, shales or claystones and evaporites that were deposited during the Middle and Late Triassic epochs ... Lower Keuper ...